Simone Biles provided further inspiration when she returned to action on Tuesday and secured a bronze medal on the balance beam.
China enjoyed success with a Guan Chenchen and Tang Xijing one-two, but the American gymnast stole the headlines on her first appearance back after withdrawing from the team final last week.
Mental health concerns were cited as the reason for Biles stepping away from the team events and other individual disciplines, though the 24-year-old excelled in her sole event on the beam.
The four-time Rio Olympics gold medallist reminded the world of her quality with a 14.000 score, and, despite Chenchen's last-ditch 14.633, she produced an emphatic return for the United States.
"I was just happy to be able to perform, regardless of the outcome," Biles explained after Tuesday's event. "I did it for me, and I was just proud of myself for being able to compete one more time.
"Just to have the opportunity to compete at the Olympic Games meant the world, because training for five years and then coming here, then kind of being triggered and not being able to do anything, it wasn't fun.
"To go out there and compete one more time and have everyone's support meant the world."
To add to Biles' memorable comeback, the USA's basketball stars nudged past Spain 95-81 to reach the Olympic semi-finals, with Kevin Durrant netting a team-high 29 points to drive his side towards victory.
It was a far from convincing performance from the USA, however, as they trailed 39-25 at one point in the second quarter before rallying impressively to level at 43-43 at the halfway stage.
THOMPSON-HERAH COMPLETES DOUBLE-DOUBLE
Elaine Thompson-Herah motored to sprinting history as she won the 200 metres women's final to complete the sprint double-double.
The Jamaican set a new national record with 21.53 seconds, the second-fastest time in the history of the event, making herself just the second athlete ever, after Usain Bolt, to win both titles at consecutive Games.
Thompson-Herah, who claimed 100-metre gold on Saturday after doubling up for the first time at Rio 2016, just missed out on Florence Griffith-Joyner's 1988 world record by 0.19s.
"Oh my god, it's amazing that I have ever seen this day. That I could complete another double. I can't believe it," the 29-year-old said after the 200 metres final.
"I really had to pull it out to win the 200m. It's a new PB [personal best] and a national record. I am so, so happy.
"Honestly I am so tired, my legs just need some rest. I've done so many races in the last few days, but I am very grateful."
WARHOLM'S WORLD
Karsten Warholm demolished the world record with a remarkable 400 metres hurdles triumph, smashing the previous record run for a second time in five weeks.
At the start of July in Oslo, Warholm cut 0.08 seconds off Kevin Young's longstanding record that was set at the Barcelona Games in 1992, though the 25-year-old slashed even more off in Tuesday's final.
The Norwegian star powered through in 45.94s, hacking an astounding 0.76s off the global mark to secure a memorable victory.
"It's just so big. It's almost like history here. It was the only thing missing from my collection," the 25-year-old said after his win. "I had a World Championships [gold medal]. I had European Championships, I had the world record, the European record.
"The Olympic gold medal is what everybody talks about. I knew this race was going to be the toughest of my life, but I was ready."
The top three finishers all beat the previous Olympic record, with American silver medallist Rai Benjamin running 46.17, yet the performance of Benjamin's life was simply no match for Warholm.
BRAZIL PREPARE TO DEFEND TITLE
Brazil inflicted shoot-out heartbreak on Mexico after a 0-0 stalemate in 120 minutes to set up a final showpiece with Spain.
Reinier converted the crucial spot-kick and, with Eduardo Aguirre and Johan Vasquez missing, the defending Olympic champions ran out 4-1 victors.
"Playing the final match in the Olympics is a dream," said Brazil's head coach Andre Jardine. "The film I saw was the film of life. Everything we’ve gone through. Although we didn’t win in the 90 minutes, we took more risks."
Japan suffered extra-time agony in their semi-final against Spain as Marco Asensio's late winner sunk the host nation to tee up a mouth-watering prospect for Saturday's final.
Despite footballing disappointment, women's boxer Sena Irie provided the host nation reason to celebrate as she edged past the Philippines' 2019 world champion Nesthy Petecio to achieve gold.
Irie's win in the women’s featherweight class final means she is Japan’s first female boxing champion at the Olympics.
CYCLING CHAOS
Germany twice recorded world record rides to earn their first gold – and, in fact, their first ever medal – in the women's team pursuit cycling track event.
A strong Great Britain side, including Laura Kenny, awaited Germany in the final but the team of Mieke Kroeger, Franziska Brausse, Lisa Brennauer and Lisa Klein produced the ride of their lives to finish in 4:06.159, almost two seconds quicker than the previous record.
In a dramatic day of cycling, the reigning world champions Netherlands won their first gold since 1936 in the men's team sprint as Team GB again had to settle for silver inside the velodrome.
That silver for Jason Kenny meant he became the first athlete to win eight Olympic medals in cycling track events and also equalled the total medal haul of Britain's most successful Olympian Sir Bradley Wiggins.
More controversy filled Tuesday's track events, with Denmark's Frederik Madsen crashing into the back of Team GB's Charlie Tanfield inside the closing kilometre of the men's team pursuit heats.
The UCI later deemed the Danes, who were near two seconds ahead of their opponents, to have completed a successful catch to make it through to Thursday's final against Italy, despite the incident.
Elaine Thompson-Herah had been writing down the goal of defending her Olympic titles daily prior to her history-making efforts at Tokyo 2020.
The Jamaican sprint star ran the second-fastest time ever in the women's 100 metres on Saturday to retain the gold she won at Rio five years ago.
On Tuesday, Thompson-Herah was celebrating again after a time of 21.53 saw her also defend in the half-lap race, which coincidentally was also the second fastest in the record books.
Thompson-Herah consequently became the first woman to defend the sprint double and she spoke about how she focused her attentions after injuries had plagued the intervening years between the two Games.
"I'm happy, I'm overwhelmed, I'm lost for words. I never think [about] this day even though the work was put in already," she told a news conference.
"But [with] the ups and downs, the obstacles that I have been hurdling and to five years later win a double at the Olympics – it's amazing.
"I think God is good, and I've written this down – if I had my phone I can show you it's in my notes – daily. I've written it down every day; defending my titles, setting new PBs, setting new records.
"Now I can tick those off. There is more in there that I'm looking forward to accomplishing but it's an amazing feeling to be among the greatest, to be in the record books and also the history books. It's an amazing feeling."
There is now only a three-year cycle to Paris 2024 given these Games were postponed by a year due to the coronavirus pandemic.
While becoming the first woman to three-peat in both events is on her radar, Thompson-Herah is focused on a more immediate goal at the World Championships in Eugene, Oregon next year.
"Yes, three years is not far but since that I have both double Olympics I'm looking forward to [trying to win] a title in the World Championships," she added.
"I only have a silver from 2015. So therefore I'm just taking it year by year. I'm looking forward to next year in Eugene. Paris is in the books but I'm taking it year by year and looking for a World Championship title before Paris."
Thompson-Herah had spoken about how she had not slept much following her 100m win.
She elaborated on that point, saying: "Well I didn't say I was tired after the 100 metres, I said we had two runs yesterday which I have never had before.
"We had the heat in the morning and the semis in the afternoon, then to come back and run the final tonight that is tiring, of course, because normally we have every other day to compete in the 200 but this time the schedule was switched up on us where we had two races in one day.
"So definitely, sprinting will take a lot out of your body, we are running very fast, I ran a PB in the 100m so of course I'm very tired, but it's my job. I came out here and I managed to get another PB and a national record that I'm really excited about."
Elaine Thompson-Herah joined some esteemed company by completing a 100 and 200 metres double at the same Olympics on Tuesday.
The Jamaican sprint star backed up her sensational triumph in the shorter distance, where she posted an Olympic record 10.61 seconds, to win the half-lap race in 21.53s.
In doing so, Thompson-Herah repeated the double she completed at Rio 2016 and is the first female athlete to defend each sprint title.
Indeed, only one runner has ever done so and that person happens to be the legendary Usain Bolt, who actually achieved the accolade of winning both races on three straight occasions.
Here, Stats Perform remembers the superstar duo's memorable moments of glory.
THOMPSON-HERAH:
Rio 2016 – 100m
Shelly-Ann Fraser-Pryce was attempting to become the first woman to win the 100m title at three straight Olympics but injuries had plagued her 2016 season and she could only finish third. Instead, it was Thompson-Herah who won gold for Jamaica in a time of 10.71s. "When I crossed the line and glanced across to see I was clear I didn't quite know how to celebrate. There is a big screen back home in my community in Jamaica. I can't imagine what is happening there right now," she said on that occasion.
Rio 2016 – 200m
Only a few days later, Thompson-Herah became the first woman since Florence Griffith-Joyner in 1988 to do the double in the women's premier sprint events (Marion Jones had done so in 2000 but later had her medals stripped). Then world champion Dafne Schippers tried to reel in her rival on the home stretch, but there was no stopping Thompson-Herah who crossed the line first in a time of 21.78s. "I know Dafne is a strong finisher, so I knew I had to have a strong finish, as well, just keep my composure and execute straight to the line," she said of the win.
Tokyo 2020 – 100m
Injuries had plagued Thompson-Herah in the intervening years but her form was peaking ahead of reaching these Games. And it all came together beautifully on Saturday when Thompson-Herah sprinted an Olympic-record time of 10.61s to lead a Jamaica one-two-three (Fraser-Pryce and Shericka Jackson completed the podium) and defend her 100m title. "I could have gone faster if I wasn't pointing and celebrating early. But that shows there is more in store, so hopefully, one day, I can unleash that time," she said.
Tokyo 2020 – 200m
Just like in 2016, Thompson-Herah backed up one dominant triumph with another. A time of 21.53 made her the second-fastest woman over 200m and also meant she could celebrate a place in the history books. She said: "Honestly I just need to sleep, I have not slept since the 100 metres, honestly my body is in shock mode, but I still had my composure to come out here. It feels good to be in the history book, to set a barrier for the other generation of athletes coming up because we have got a lot of athletes coming from Jamaica, it means a lot to me to set this barrier."
USAIN BOLT
Beijing 2008 – 100m
The legendary Bolt started his era of domination in Beijing 13 years ago. In the 100m final, he ran a then world-record time of 9.69s despite easing up down the closing metres. "I wasn't bragging. When I thought I had the field covered I was celebrating. I was happy. I didn't know I'd broken it until my victory lap." With his victory, Bolt became the first men's 100m champion from Jamaica.
Beijing 2008 – 200m
At that same Games, Bolt became the first sprinter to break the 100 and 200m records at the same Olympics to take out the latter title in an astonishing time of 19.30s. Accused of jogging towards the line in earlier heats, Bolt delivered on a promise to run flat out in a dominant final. "I was worried [I might not break the record] after the semis. But I told everybody I would leave everything on the track and I did just that. I've proved I'm a true champion and that with hard work anything is possible," Bolt said.
London 2012 – 100m
Bolt had been beaten by a young pretender in the form of compatriot Yohan Blake in both 100 and 200m races in the 2012 season. But come Games time, it was Bolt who once again reigned supreme – clocking an Olympic record 9.63s (he had beaten his world benchmark from Beijing by this point) to defend the gold. "I tell you people it's all about business for me, and I brought it. When it comes down to business, I know what to do. The crowd were wonderful. I could feel that energy. I feel extremely good and happy," Bolt said.
London 2012 – 200m
An ever-relaxed Bolt enjoyed more success when he again came out on top against Blake in the 200m, winning with a time of 19.32s. In doing so, he became the first man to defend the 200m title and first to complete the 100-200m double twice. On the moment of history, he said: "I've got nothing left to prove. I've showed the world I'm the best and, right now, I just want to enjoy myself. This is my moment. I'll never forget this."
Rio 2016 – 100m
Bolt was by no means the favourite heading into his third Olympics four years ago, with long-time American rival Justin Gatlin holding the season's best prior to the Games. In the final, Bolt came good by defeating Gatlin by 0.08s. With this victory, Bolt became the first person to win the 100m title three times. In front of a jubilant crowd in Brazil, Bolt said: "It wasn't perfect today, but I got it done and I'm pretty proud of what I've achieved. Nobody else has done it or even attempted it."
Rio 2016 – 200m
He would again back up 100m glory in the 200m race, becoming the first man to win the 200m title three times despite having limited runs over the distance in the build-up to the Olympics. He ran a 19.78s to beat Canada's Andre De Grasse. "The fact I came here and executed what I wanted to is a brilliant feeling. I wasn't happy with the time when I crossed the line but I'm excited I got the gold medal - that's the key thing," Bolt said.
Elaine Thompson-Herah made history, while Karsten Warholm blasted the world record in the men's 400 metres hurdles in a frantic day of athletics action at Tokyo 2020.
Jamaican sprint star Thompson-Herah completed the 100m and 200m double becoming the first woman to defend each title at the Olympics having won both in Rio five years ago.
There was also a slice of history for Anita Wlodarczyk in the women's hammer and Athing Mu romped to victory in the 800m.
Here's a round-up of all the best action from the track and field on Tuesday.
THOMPSON-HERAH REIGNS AGAIN
It has been another Olympics to remember for Thompson-Herah, whose winning time of 21.53 seconds is the fastest ever in the women's 200m.
The 29-year-old stormed out of the bend and left her rivals trailing in her wake to take a commanding victory.
Christine Mboma of Namibia claimed the silver in a world under-20 record of 21.81 with Gabby Thomas of the United States completing the podium.
WARHOLM SMASHES RECORD IN RACE FOR THE AGES
Norwegian sensation Warholm absolutely destroyed his own 400m hurdles world record (46.70) with a blistering time of 45.94. Nearest rival Rai Benjamin himself posted a 46.17 to take silver.
"This is so crazy. It's by far the biggest moment of my life," two-time world champion Warholm said.
"I've been training like a f*****g maniac. I struggled to sleep last night because I had this special feeling in my chest. It's like the feeling I had as a six-year-old on Christmas Eve. I was so focused on getting that last medal in my collection and now it's all complete."
Also in the morning session, world champion Malaika Mihambo saved the best until last to win gold in the women's long jump.
American Brittney Reese, the 2012 Olympic champion, and Ese Brume of Nigeria had traded the lead through the first five rounds until Mihambo posted the only seven-metre jump of the competition at the sixth attempt (recording exactly 7m).
Reese finished in silver behind the German, with Brume taking the bronze.
MARVELLOUS MU TAKES 800m CROWN
Mu, the world leader over 800m this year, took up the lead almost immediately from the off and never looked back to come home in a time of 1:55.21 – setting a new American record in the process.
Keely Hodgkinson made a strong charge late in the race and set a new British benchmark of 1:55.88 to take silver.
A personal-best time of 1:56.81 from Raevyn Rogers meant the USA had two women on the podium.
HISTORY FOR WLODARCZYK AS DUPLANTIS REIGNS SUPREME
There was a sense of deja vu in the women's hammer as Wlodarczyk successfully defended the title she won at London 2012 and Rio 2016 – making her the first woman to win a trio of golds in the same discipline at three straight Games.
Her throw of 78.48m was a season's best. China's Wang Zheng took silver thanks to a 77.03m on her last throw, while Malwina Kopron of Poland was third with a 75.49m. Coincidentally the podium line-up was the same as the 2017 World Championships in London.
Mondo Duplantis lived up to his billing in the men's pole vault to win gold at his first Olympics by clearing a distance of 6.02m.
The Swede has broken the world record twice since winning silver at the World Championships in Doha two years ago, and had a crack at going to 6.19m here after it was confirmed he had won gold ahead of American Christopher Nilsen.
While he fell short there, Duplantis still fulfilled his dream of winning Olympic gold and, at 21, has plenty of time to try and beat his own benchmark.
DE GRASSE COASTS THROUGH, LYLES ALMOST PAYS THE PRICE
Fresh from winning bronze in the men's 100m, Canada's Andre De Grasse was fastest in the men's 200m with a Canadian record time of 19.73 seconds in the third semi-final.
World champion Noah Lyles is also into the final but eased up during his semi to finish outside the automatic spots and had to qualify as one of the fastest losers.
In the first round of the men's 110m hurdles, world champion Grant Holloway clocked a 13.02s – faster than the time needed to win gold at Rio 2016 and the fastest heat time of any competition in history.
Spain reached their first men's Olympic football final since Sydney in 2000 with a 1-0 win over host nation Japan after extra-time.
Real Madrid's Marco Asensio proved the difference in the 116th minute as he whipped past Koshei Tani to set up a final clash with defending champions Brazil on Saturday.
Mikel Merino nodded the first chance of the game wide before Rafa Mir, whose hat-trick powered his side into the semi-finals, should have opened the scoring but the forward poked into goalkeeper Tani's legs.
Merino thought he had atoned for his earlier miss by winning a second-half penalty but VAR intervened, deeming Maya Yoshida to have played the ball first.
Mikel Oyarzabal scuffed the final opportunity of normal time before Daizen Maeda headed agonisingly over Unai Simon's goal in the first-half of extra-time.
Heartbreak for Japan followed as substitute Asensio showed his quality by touching inside before calmly bending into the bottom left corner with just four minutes remaining.
The result could have been different, however, if Koji Miyoshi had not seen his shot blocked moments before Asensio's winner but Japan will now have to settle for a bronze-medal contest on Friday against Mexico.
Spain, who boasted six senior stars from Euro 2020, will now be hoping to go one further than silver at Sydney 2000 as they look to repeat the heroics of Barcelona 1992 that saw them claim gold.
Elaine Thompson-Herah won the sprint double-double at the Olympic Games after storming to victory in Tuesday's 200 metres final.
The Jamaican won in a new national record time of 21.53 seconds in Tokyo, the second-fastest in the history of the event.
Thompson-Herah, the 100m champion, also claimed gold over both distances in Rio de Janeiro five years ago. Usain Bolt is the only other male or female sprinter in history to win both titles at consecutive Games.
Christine Mbomba, barred from her preferred 400m event due to naturally high testosterone levels, took silver with another world-best under-20 time of 21.81. United States star Gabrielle Thomas won bronze ahead of Jamaican great Shelly-Ann Fraser-Pryce.
Unsurprisingly, Thompson-Herah admitted her exploits had left her in need of a rest, having followed her 100m gold with a 200m run just 0.19 seconds short of Florence Griffith-Joyner's 1988 world record.
"Honestly, I just need to sleep!" she said to the BBC.
"I have not slept since the 100 metres, honestly my body is in shock mode, but I still had my composure to come out here.
"I knew my time wouldn't be fast because yesterday we ran two rounds, which took a lot from me, I equalled my PB last night. So to come out to get a national record and be two-time Olympic champion I am so happy.
"I was begging for the line, but you have to hold your technique through the line.
Thompson-Herah added: "It feels good to be in the history book, to set a barrier for the other generation of athletes coming up.
"We have got a lot of athletes coming from Jamaica, it means a lot to me to set this barrier."
Japan's Sena Irie won the first boxing gold medal of Tokyo 2020 and then admitted: It's time I found a proper job.
The mild-mannered 20-year-old became an Olympic hero at her home Games by beating Nesthy Petecio of the Philippines in the final of the women's featherweight division.
Petecio won the second round on four of the five judges' cards, but it was otherwise a fight that Irie edged, taking a unanimous verdict.
She jumped for joy at the declaration before leaving the ring in tears, having made rapid progress in her boxing career since taking silver in the Asian and Oceanian Olympic qualifying event 18 months ago.
Irie also finished fifth at the 2019 AIBA Women's World Boxing Championships and admitted she wants a world title before hanging up her gloves.
Irie does not look to be in boxing for the long run, despite her pride at landing the gold.
"I just want to win the gold medal again at the World Championships," she said. "I have to start job hunting too, so I want to work on that.
"I want to end my career with success, so I will retire [from boxing] after graduation from college. I want to work for a gaming company.
"It's honourable for me to win the first gold medal for Japan in women's boxing. I'm not a talented athlete, I can't even do a back-hip circle on the [gymnastics] bar. I think I was able to show Japanese women that if we keep putting the work in, we can achieve something."
She expressed the hope that women's boxing would grow in Japan as a result of her success, saying: "People may think women who box are violent and have a rough temper, but I think I proved today that is not the case."
IGLESIAS ON SONG
Unlike Irie, Cuba's Roniel Iglesias is a lifer in the boxing ring. He landed the second gold medal of his Olympic career with a brilliant performance to fend off Britain's Pat McCormack, and then targeted a third in Paris.
His London 2012 title came at light welterweight, as did a bronze four years previously in Beijing, but Iglesias now fights at welterweight
McCormack was not entirely outboxed, with two judges giving him a round apiece, but the class of 32-year-old Iglesias at this level was telling.
"I think it tells you a lot about me being the top athlete," Iglesias said. "I made a lot of sacrifices for this. Winning the gold medal was so important to me.
"Having a medal in London first, then I had a lot of difficulties, I was injured for a while. Boxing is a very tough sport but I was able to overcome these difficulties. This title is so important to me.
"I'm known as an athlete for training a lot, training strong, and doing 50 fights to win. I always train very hard because that's what you have to do.
"My biggest motivation was those who doubted me for competing at the Olympics again, it became the ultimate push for me to get up in the morning and put in that extra bit of effort.
"I'm confident that I can fight at the 2024 Paris Games too because I continue to train. I definitely plan to continue fighting, being a boxer, and training. Let's see if I can make it to Paris."
McCormack said: "I was up against a top fighter from Cuba. I have got no complaints. I lost to a very, very good fighter."
Denmark were perhaps fortunate to progress to the men's team pursuit final after Frederik Madsen crashed into the back of Great Britain's Charlie Tanfield in the closing kilometre.
The Danes, who were over two seconds ahead of their opponents, were easing to victory in the heats until lead rider Madsen inexplicably smashed into Tanfield, meaning just two riders from each side crossed the finish line.
The crash prompted an angry response from Madsen and left both teams awaiting further judgement from the officials, with Denmark claiming they had made the catch before the collision.
The UCI deliberated before confirming Denmark's place in the final, as race officials felt a successful catch – deemed to be made by a team of three when they are within one metre of the other team's last rider – had been completed.
The crash capped an eventful day in cycling, with Tanfield serving as a late replacement for Ed Clancy, who retired on Tuesday with a back injury, amid a row over Denmark's illegal equipment from Monday's qualifying session.
Prior to Tuesday's meeting, British Cycling performance director Stephen Park further fuelled the grudge match by confirming Britain were one of "several" teams calling for the Danes to be disqualified due to their use of plastering on shins to improve aerodynamics.
Madsen, speaking after the crash, explained how the unexpected collision happened and also defended against the allegations of unfair equipment use.
I knew that there was a GB guy. I didn't know if he was the third man or the fourth one, or first or second man. Suddenly he was just in front of me, and I couldn't react," he said.
"It's just a shame and again I hope Charlie [Tanfield] is okay.
"We don't have anything to do with our equipment, clothes and the rest out of the sport. We just go on the bikes and we just ride our race. That's the only job that we have.
"We do what our team tells us to do. Ask a Formula One driver if he knows everything about the car – he does not. So, we don't know anything about our equipment. Ask our team, not us."
Italy, who set a new world record of 3:42.307 in their heat against New Zealand, now stand in Denmark's way of a gold medal on Thursday.
GERMANY SET NEW WORLD RECORD
In the women's team pursuit heats, Germany and Great Britain exchanged world-best times before the former's 4:06.159 reclaimed the record to set up a ride for gold between the two.
Germany, who had not claimed a medal in this specific event since its 2012 introduction, then left Laura Kenny's team in their tracks as they cruised to victory, setting a new world record of 4:04.242.
Kenny's silver meant she became just the fourth British woman to win at least five medals at the Games, though she admitted an element of shock at Germany's performance.
"I think they [Germany] took everyone by surprise," Kenny told BBC Sport after the final. "They were the quickest at the worlds, it was just in qualifying they didn't get it right.
"I think they ran fourth or fifth. We knew they were going to go fast but just maybe not that fast."
The United States and Canada battled it out for bronze, with Chloe Dygert inspiring her team-mates to assure a place on the podium for the USA.
NETHERLANDS PREVAIL BUT KING KENNY CROWNED
World champions the Netherlands stormed to gold past the defending Olympic champions Team GB as they smashed the Olympic record with a time of 41.369 seconds.
The Netherlands last won a gold medal in the men's event in 1936 and the victory also means they join France as the only nation to win gold as reigning world champions in this cycling track event.
Jeffrey Hoogland, who is already a three-time world champion, concurred with team-mate Harrie Lavreysen as he explained his team had achieved the one goal they set before the Games.
"It means a lot. All these years of work and even the extra year process made it extra tough, but I think everybody had the same problem," Hoogland said after the final.
"As Harrie said, we are three times world champion. We are top of the top world riders, and we had each other to keep the level high. Sometimes that was hard but at the end it was all worth it."
Great Britain, who had collected gold at the previous three Games, had to settle for their second silver in just over 20 minutes, with Jason Kenny enjoying a bittersweet moment as he became the first athlete to win eight Olympic medals in track cycling.
Kenny also equalled the total medal haul of Britain's most successful Olympian Sir Bradley Wiggins, though Kenny has one more gold and silver.
France, who have claimed a medal in the men's team sprint in every Games since it was first held in 2000, edged out Australia for bronze.
Brazil will defend their men's Olympic football title in the final thanks to a classy display of penalty-taking in a 4-1 shoot-out defeat of Mexico following a 0-0 draw after extra time.
The 2016 champions were pushed all the way by Jaime Lozano's side in Kashima but ultimately got the job done on penalties, successfully converting all four of their attempts to reach the final where they will face either Spain or Japan.
Guilherme Arana spurned the best chance of the first half in the 13th minute when he was denied by Guillermo Ochoa with just the goalkeeper in his way.
An even better opportunity looked set to fall Brazil's way soon after as Douglas Luiz was sent tumbling in the box, but the initial penalty award was overturned following a VAR review, with the Aston Villa midfield shown to have exaggerated contact with Jose Esquivel.
The second half was far tetchier, however, with opportunities a rare commodity at either end. The best Brazil could muster until the latter stages was a feeble Antony effort that caused Ochoa no concerns.
Ochoa was beaten in the 82nd minute but the post came to his rescue, with Richarlison's header coming off the inside of the upright but refusing to cross the line.
That saw the match go to extra time and rarely did either side look likely to make the breakthrough, with penalties long appearing a formality.
Eduardo Aguirre missed Mexico's first kick in the shoot-out after Dani Alves had converted, giving El Tri an uphill battle right from the start, and Johan Vasquez did no better with their second as he smashed against the post.
Charly Rodriguez at least got Mexico on the board, but Reinier followed the example set by Gabriel Martinelli and Bruno Guimaraes before him to slot home the decisive kick.
Kevin Durant said Team USA have "got to finish it" after battling past Spain to reach the Olympic semi-finals.
The Brooklyn Nets star poured in a team-high 29 points as the United States won 95-81 at the Saitama Super Arena, bolstering their gold medal hopes.
It was far from an easy assignment, and nor was it always entirely convincing from the US team, who trailed 39-29 with 3:25 of the second quarter remaining.
They rallied impressively, however, to draw level at 43-43 at the halfway point, and Spain never led again.
"We started making shots there in the second quarter. Once we see that ball going into the rim, that put all of us at ease," Durant said.
"Our defence was a little better, a little tighter, we rebounded better after that. And guys just got more comfortable shooting the basketball.
"We drove it to the rim at the end of that second and were able to get our rhythm back a little bit. I like how we played in that second quarter, from the end of the second quarter all the way to finish the game, and that's how we're gonna need to play going forward.
"It was a huge boost. We didn't want to go into the half down double digits. We knew we didn't want to get down big against this team."
Ricky Rubio plundered 38 points for Spain, with the Minnesota Timberwolves man shooting 13-of-20 from the field. That gave him the highest score by a Spain men's player in an Olympic game, beating the 37 points that Pau Gasol scored against China in 2004.
Rubio also drained four of his seven shots from three-point range, the same as Durant, but USA's 22-6 run at the start of the third quarter took the game away from Spain.
The Spaniards briefly got back to just four points behind, in the early moments of the fourth quarter, yet despite their overall 42-32 dominance on the boards, they were found wanting elsewhere.
USA coach Gregg Popovich said: "I feel great about the victory knowing full well there is a lot of work to be done. We played a terrific basketball team.
"To play that team and go down by nine or 10 and stay in and find a way to win is very satisfying."
Durant feels the team are ready to step up a level, now they are through to the final four.
The pre-Olympics defeats to Australia and Nigeria no longer matter, nor does the loss to France in the Tokyo 2020 group stage.
"I love how we stuck with it throughout this whole period of time and guys started figuring out what we need to do," Durant said.
"You've just got to finish it. We're supposed to be here. For us it's about getting a gold."
Norway's Karsten Warholm smashed the world record in the men's Olympic 400 metres hurdles final, breaking the 46-second barrier on the way to gold medal glory.
Warholm finished in 45.94 seconds, well ahead of his own previous record mark of 46.70. USA's Rai Benjamin claimed silver in 46.17, also beating the old world record, with Alison dos Santos taking bronze in 46.72.
"It's by far the biggest moment of my life," Warholm said. "It defines everything, all the hours I put in, everything that my coach has been working for.
"With all the respect for all the athletes, there are athletes that were not good that will get an Olympic gold. Rai running 46.17 would deserve a gold medal. It is crazy, it is just an honour to be a part of it. I never thought in my wildest imagination that this would be possible."
Asked about his dash to the line in the closing metres, Warholm added: "I couldn't even feel my legs. I knew I had a crazy American trying to catch me, so I ran for my life."
Germany's Malaika Mihambo admitted she could not watch the finale to the women's long jump as she won gold.
Mihambo took the lead with a jump of 7.00m with her final attempt before USA's Brittney Reese and Nigeria's Ese Brume had their last jumps.
Neither could better the leading mark, with Reese settling for silver with 6.97 metres on countback ahead of Brume.
"It was really hard to watch, so I tried to just have a sneak peek on the display and see how far it was," Mihambo said.
"I really don't like this position where you cannot do anything about it, and you just have to let the girls do what they're able to do. You have to wait, so it was a horrible moment, but at least it was short.
“I feel overwhelmed. It was, I think, the most exciting women’s long jump competition in history."
DURANT DOMINATES AS USA SURVIVE SCARE
The United States did not have it all their way but triumphed 95-81 over Spain to seal a spot in the men's basketball semi-finals.
Spain led by as much as 10 points in the second quarter before USA drew level by half-time and accelerated in the second half. Spain again closed within four points of the gold medal favourites in the final quarter, inspired by Ricky Rubio's 38 points.
Kevin Durant excelled for Team USA, with 29 points and four assists, while Jrue Holiday contributed 12 points and five assists as they capitalised on a 17-9 turnover differential.
USA lost to Australia and Nigeria in exhibition games prior to Tokyo 2020 before losing their Olympics opener to France but have since steadied.
The winner of Australia-Argentina will play USA in the semi-finals on Thursday.
NBA duo Zoran Dragic (27 points, six rebounds and four assists) and Luka Doncic (20 points, eight rebounds and 11 assists) starred as Slovenia also progressed to the semi-finals with a 94-70 win over Germany.
CARRINGTON'S GOLD KAYAKING DOUBLE
New Zealand's Lisa Carrington had a golden day in the kayaking, remarkably winning two gold medals within an hour.
Carrington won her third straight gold in the women's kayak single 200m with an Olympic best time of 38.12 seconds, ahead of Spain's Teresa Portela and Denmark's Emma Jorgensen.
The New Zealander backed up alongside Caitlin Regal to win the women's kayak double 500m final with a world best time of 1:35.785.
Carrington joined fellow kayakers Ian Ferguson and Paul MacDonald and equestrian great Sir Mark Todd as the only New Zealanders to have won five medals at the Olympic Games.
The 32-year-old may win more medals too, competing in the K1 500 event which starts on Wednesday.
“Today was about taking just one race at a time," Carrington said. "There's a plan, and it was just about executing it. For me, it was just trying to stay in the moment and doing the best I can. We've worked really hard and knew today was going to be a big day.”
HENDRICKX POWERS BELGIUM INTO HOCKEY FINAL
World champions Belgium qualified for the gold medal match of the men's hockey after a commanding final quarter sealed a 5-2 win over India.
Belgium piled on three fourth-quarter goals to guarantee a medal in the decider where they will face either Australia or Germany.
Alexander Hendrickx scored a hat-trick including two of the Red Lions' goals in the final quarter after India had fought back from an early deficit to lead 2-1 at quarter-time.
Drag flick expert Hendrickx has scored an unrivalled 14 goals during Belgium's Tokyo 2020 campaign, eight clear of the next best, Australia's Blake Govers.
Hendrickx said: "It's really a team job that comes together. It's my name on the scoresheet, but it's a team job."
World number one Australia and sixth-ranked Germany meet later on Tuesday to determine the other gold medal match finalist.
Olympic chiefs have demanded answers from Belarus before the close of play on Tuesday over the saga involving sprinter Krystsina Tsimanouskaya.
Tsimanouskaya refused to board a flight home from Japan after allegedly being taken to the airport against her will, having publicly criticised her team's organisation on social media.
She competed in just one event, finishing fourth in a 100 metres heat, before being pulled out of the Games by Belarusian officials. Due to also compete in the 200m, she claimed a Belarusian coach entered her for the 4x400m relay despite her never racing in the event before.
Tsimanouskaya suggested that was a result of members of the team being considered ineligible due to not completing enough doping tests.
The Belarusian Sport Solidarity Foundation indicated Tsimanouskaya feared for her life upon returning to Minsk. The country is under the authoritarian leadership of president Alexander Lukashenko, whose son Viktor heads the national Olympic committee (NOC). Both men were banned last December from attending Tokyo 2020.
Now the International Olympic Committee (IOC) is stepping up its probe into what occurred.
IOC spokesperson Mark Adams said on Tuesday: "We've asked for a report from the [Belarusian] NOC today. We requested it yesterday, we want it today.
"We have decided to launch, not surprisingly, a formal investigation, which will be led by the IOC administration. We need to establish the full facts, we need to hear everyone involved. That obviously can take time."
Tsimanouskaya has been granted a Polish visa for now, and Adams said the 24-year-old spoke to the IOC twice on Monday, assuring that she now feels "safe and secure".
She has had police protection since alerting officers at Haneda airport to her situation.
"We've also now contacted the NOC of Poland," Adams said. "In terms of what the IOC can do for her in terms of her future we have talked to them with regard to her sport after her arrival in Warsaw, if that is where she does indeed choose to end up."
Alex Dickerson hammered a grand slam as the San Francisco Giants won 11-8 over the Arizona Diamondbacks in the MLB on Monday.
Leading 3-1 at the top of the fifth inning, Dickerson hit Diamondbacks right-hander J.B. Bukauskas over at right-field with bases loaded.
It was Dickerson's third career grand slam, having crushed one on his memorable franchise debut two years ago.
The home run was only Dickerson's 10th of 2021, with only 28 RBI this season.
The table topping Giants led 7-1 but the Diamondbacks, bottom of the National League West, stormed back after two-run shots from Josh Reddick and Asdrubal Cabrera.
Wilmer Flores homered to make it 8-5 before Arizona tied it up after three runs in the seventh inning off reliever Jay Jackson.
In the 10th inning, Buster Posey drove in Brandon Crawford, before two more runs, with Jarlin Garcia closing it out.
Brinson grand slam, Escobar HR home debut
Lewis Brinson hit a first-innings grand slam to lead the Miami Marlins to a 6-3 win over the New York Mets. With bases loaded, Brinson drove it out over right-field.
New acquisition Eduardo Escobar marked his home debut with a three-run home run in the Milwaukee Brewers' 6-2 victory over the Pittsburgh Pirates.
Right-hander Jorge Lopez allowed one hit across six innings as the Baltimore Orioles won 7-1 over the New York Yankees.
Andy Ibanez made an incredible sliding stop at second base with a throw to first in the Texas Rangers' 4-1 win over the Los Angeles Angels.
Rays brushed aside by Mariners
The Tampa Bay Rays (64-43) may be top of the American League East but they were humbled 8-2 by the Seattle Mariners (57-50) after conceding five runs in the third inning. It was not a good shift on the mound for Michael Wacha, allowing eight hits in four innings.
Guerrero tops the charts
Vladimir Guerrero Jr hit a two-run home run to tie it up in the Toronto Blue Jays' 5-2 loss to the Cleveland Indians. Guerrero now has an league high 82 runs and 85 RBI, while he is second behind only Shohei Ohtani for most home runs, with 34.
Monday's results
Cleveland Indians 5-2 Toronto Blue Jays
Philadelphia Phillies 7-5 Washington Nationals
Baltimore Orioles 7-1 New York Yankees
Miami Marlins 6-3 New York Mets
Seattle Mariners 8-2 Tampa Bay Rays
Texas Rangers 4-1 Los Angeles Angels
Milwaukee Brewers 6-2 Pittsburgh Pirates
San Francisco Giants 11-8 Arizona Diamondbacks
Astros at Dodgers
World champions, the Los Angeles Dodgers (64-43) will host the Houston Astros (64-42) in a blockbuster rivalry meeting.
Raven Saunders could still face punishment for her crossed-arms 'X' political protest on the Olympic Games podium, despite USA team officials clearing her of any wrongdoing.
The shot put silver medallist raised her arms above her head in a pose she said represented "the intersection of where all people who are oppressed meet".
Saunders, who is black and gay, has been backed by the United States Olympic and Paralympic Committee (USOPC), but that is not the end of the matter.
The USOPC said in a statement on Monday: "Per the USOPC's delegation terms, the USOPC conducted its own review and determined that Raven Saunders' peaceful expression in support of racial and social justice that happened at the conclusion of the ceremony was respectful of her competitors and did not violate our rules related to demonstration."
Yet political statements on the medal podium are not permitted at Tokyo 2020, even though rules on such actions have been relaxed elsewhere by the International Olympic Committee (IOC).
In the wake of the USOPC remarks, the IOC was seeking further answers from the Americans on Tuesday.
Mark Adams, the IOC spokesperson, said in a briefing: "We've seen their public opinion and we're in touch with them.
"We've written a letter asking for some further information, to be able to evaluate the next steps, if any, that should be taken.
"Obviously, the Games are held under the Olympic charter and the rules of the Olympic movement, so let's wait to see what clarification we get from USOPC."
It seems unimaginable that the IOC would take any drastic action, given the outcry that would follow.
Saunders tweeted on Sunday: "Let them try and take this medal. I'm running across the border even though I can't swim."
The Olympic Games has seen few such protests on podiums. Perhaps the most notable was the 'Black Power' salute by Tommie Smith and John Carlos, gold and bronze medallists respectively in the 200 metres at the 1968 Mexico City Olympics, when both raised a black-gloved fist as the US national anthem was played.
Both were expelled from the Games but got to keep their medals.
Tennis great and long-time equal rights activist Billie Jean King has backed Saunders, writing on Twitter: "Her gesture was meaningful and respectful. There is nothing for the IOC to investigate."
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