Japan remained top of the medal table at the Tokyo Olympics as they collected another three golds on day five.

Daiki Hashimoto, 19, was the standout performer as he secured a last-minute win in the men's all-around gymnastic final, with China's Ruoteng Xiao and the Russian Olympic Committee's pre-event favourite Nikita Nagornyy settling for silver and bronze.

That win took the host nation to 13 golds, with Chizuru Arai in the women's 70kg judo – their eighth medal in the sport at the Games so far – and Yui Ohashi in the women's 200m individual medley the other victors.

China pulled one clear of the United States as they also collected three golds on Wednesday. Shi Zhiyong broke his own world record to win the men's weightlifting 73kg event, while Wang Zongyuan and Xie Siyi brought China's third diving gold at the Games with victory in the men's synchronised 3m springboard final.

The USA had to settle for silver in China's diving win, though they did pick up gold in the debut 3-on-3 women's basketball event by defeating the Russian Olympic Committee.

Katie Ledecky and Erica Sullivan captured an American one-two in the women's 1500m freestyle meaning only Michael Phelps (13) has more individual Olympic success than Ledecky.

The Russian Olympic Committee remain fourth despite not winning gold on a frustrating day that saw them finish runners-up in both 3x3 basketball events and the men's 4x200m freestyle relay.

Australia enjoyed a memorable day in rowing as they battled to back-to-back golds in both the male and female coxless four, with Ariane Titmus setting a Games record in the women's 200m freestyle to move the Australians up to six golds.

Due to Australia's success on the water, Great Britain's dominant five-gold run in the men's coxless four that stretched back to Sydney 2000 came to an end, though they did collect a first silver medal in men's quad sculls.

Tom Dean, who won gold on Tuesday, was part of the men's 4x200m freestyle team that picked up Team GB's only gold of the day as they moved down to sixth place.

Fiji continued their Olympic men's rugby sevens dominance with a 27-12 win over New Zealand to retain the title they won at Rio 2016.

Their shorter-form rugby success represents their second gold in Games history, with Fiji's sevens team yet to lose at the Olympics after extending their unbeaten run to 12 games.

In April, COVID-19 forced the Fiji squad into isolation in the capital Suva before travelling to Australia in June for a pre-Games warm-up tournament.

Head coach Gareth Baber revealed some players, who had never been on a plane before nor played at an elite level, had not seen their families in "nearly 20 weeks".

"We locked them down for five months, basically," Baber said. "They came into a training camp on Easter Monday thinking they were going back on the Friday, and on the Tuesday they were told they couldn't go back and haven’t seen their families since. That takes a special kind of person to make that commitment.

"We were effectively locked up in a Christian hostel. We built a gym, basically in the garage of the hostel, and we were there for about 12 weeks.

"In fact, when the players go back and do their quarantine, it will have been about 20 weeks since they were last with their families."

Gold medal winner Asaeli Tuivuaka, whose try sealed the all-important final win, also spoke of the sacrifices involved for the sevens success.

"This gold medal is special to me. Back at home, their sacrifice and prayer motivated me through everything," Tuivuaka said. "I did not see them, only spoke to them on the phone, and that’s why it is meaningful to me.

"I have not seen my family for months. They are praying for me, they give me a lot of encouragement to keep on moving forward so that I can be here today.

Runners-up New Zealand claimed their first medal in a men's rugby event at the Games, though Great Britain lost out to Argentina, who claimed their first medal of the Olympics, for bronze.

ZHIYONG BREAKS OWN WORLD RECORD

China's Shi Zhiyong broke his own world record to secure gold in the men's 73kg weightlifting event.

The three-time world champion becomes the second weightlifter, after Waldemar Baszanowski in 1964 and 1968, to win back-to-back titles at the Games in the lightweight category, given his previous gold in the 69kg at Rio 2016.

"I prepared five years for Olympics so I really want to perform at the best," Zhiyong explained in Mandarin. "So if I didn't make to break my own record, just a gold medal, I would feel regret.

"I want myself to break the record in the Olympics... Even though I didn't make the 192kg [on my first attempt], I am still confident that I'm pretty sure I’m going to break my record so I did the 198."

A 166kg lift in the snatch achieved an Olympic record before a 198kg clean and jerk took his total to 364kg – one kilo more than his previous world record.

HASHIMOTO CONTINUES JAPAN'S GYMNASTIC DOMINANCE

Daiki Hashimoto captured a third straight men's gymnastics all-around title for Japan as he followed up Kohei Uchimura's back-to-back victories at London 2012 and Rio 2016.

Across all six events, the 19-year-old totalled 88.465 to win gold by a whisker, with China's Ruoteng Xiao and Russia's pre-event favourite Nikita Nagornyy, the reigning world and European champions, winning silver and bronze respectively.

Hashimoto, who could only manage third behind Nagornyy's Russians in the team event on Monday, was in third again before a near-flawless routine gained 14.993 points to put him top.

Japan also claimed more gold in judo as Chizuru Arai defeated Austria's Michaela Polleres to bring the host nation its eighth judo medal of the Games so far.

LATVIA AND USA CLAIM FIRST EVER 3X3 BASKETBALL TITLES

The United States dictated proceedings throughout the five-day women's tournament, winning nine games and losing only one as they etched their names in basketball history with the first ever 3x3 Olympic basketball triumph.

Stefanie Dolson, Allisha Gray, Kelsey Plum and Jackie Young did the hard yards early before securing an 18-5 victory over the Russian Olympic Committee in the debut of 3-on-3 basketball at the Games.

In the men's edition, Latvia were the first winners as Karlis Lasmanis' two-point shot with 28 seconds left clinched a 21-18 win over the Russian Olympic Committee.

Though, basketball fanatics feel the real winner of the three-aside debut event is the sport itself.

"I think it's going to keep growing," the USA coach Kara Lawson said. "I think it's got a great future around the world, it's a lot of fun to play. Being an Olympic sport now, there's more converts probably than we've ever seen before."

SOUTH KOREA'S KIM MAKES EMPHATIC RETURN

Fencer Kim Jung-Hwan won gold at London 2012 but quit the sport before making a comeback from retirement in 2019.

After taking bronze in the men's individual sabre on Saturday, the 37-year-old may have felt fate would not be on his side.

However, Kim was part of South Korea's team that won the men's sabre on Wednesday as they coasted past Italy 45-26 in a one-sided final to defend their London 2012 title - after the discipline did not feature at Rio 2016.

Kim also becomes the first Asian fencer to claim four Olympic medals in the field, while Italy's silver medal reflected a record-extending 21st Olympic medal in the men's team sabre event.

Simone Biles will not defend her Olympic title in Thursday's individual all-around competition in order to focus on her mental health, USA Gymnastics has confirmed.

The four-time gold medallist from Rio completed only one event in Tuesday's team competition at the Ariake Gymnastics Centre, registering the lowest score of the first rotation.

Biles left the floor with a trainer and, although she later returned donned in a tracksuit, she opted not to continue and remained to support her team-mates who could only secure silver behind the Russian Olympic Committee.

Following the team event, Biles opened up on her struggles at Tokyo 2020 and said she would take it day-by-day before making a decision.

USA Gymnastics subsequently announced she will not participate on Thursday and will continue to be evaluated before a decision is made on whether she takes part in the individual event finals, which take place next week.

"After further medical evaluation, Simone Biles has withdrawn from the final individual all-around competition at the Tokyo Olympic Games, in order to focus on her mental health," a USA Gymnastics statement read.

"Simone will continue to be evaluated daily to determine whether or not to participate in next week’s individual event finals. Jade Carey, who had the ninth highest score in qualifications, will participate in her place in the all-around."

USA Gymnastics hailed Biles for her decision to put her own well-being ahead of competing.

"We wholeheartedly support Simone's decision and applaud her bravery in prioritising her well-being," the governing body added.

"Her courage shows, yet again, why she is a role model for so many."

Host nation Japan remain top of the Olympic Games medal table, one gold medal clear of the United States and China, thanks to another two gold medals on Tuesday in Tokyo.

Japan now have 10 golds at the Games, five of which have come in Judo, despite home favourite Naomi Osaka crashing out to Czech world number 42 Marketa Vondrousova in the women's singles tennis.

The USA extended their gold medal count to nine, with 17-year-old Lydia Jacoby stealing the headlines courtesy of gold in the 100m breaststroke – their third in the pool so far – though they had to settle for silver in softball as they lost to table-toppers Japan.

China, who have dominated the shooting to win eight medals in nine events, picked up three more golds with success in the 10m air pistol mixed event, the 10m air rifle mixed event and the women's 10m synchronised platform - their second diving gold in Tokyo.

The Russian Olympic Committee remain fourth with seven golds after winning the day's big event, the women's team artistic gymnastics, but that was overshadowed due to American Simone Biles withdrawing due to concerns over her mental health.

The Russians surprised in the pool, too, with Evgeny Rylov claiming 100m backstroke gold that forced defending Olympic champion Ryan Murphy to settle for bronze – that result represented the USA's first backstroke defeat since the 1992 Barcelona games.

After team-mate Adam Peaty's call for a British gold surge, Tom Dean and Duncan Scott made history by winning the first British swimming one-two since 1908 in the 200m freestyle.

Dean and Scott's swimming achievements capped a positive day for Great Britain that saw them collect six medals in total to stay in fifth place.

Meanwhile, Flora Duffy made history for Bermuda with gold in the women's triathlon as the tiny Caribbean island became the smallest country to ever win Gold at the Summer Games.

There was plenty of drama in Tokyo on Tuesday and that is set to continue as the Olympic Games ramps up further on Wednesday.

A titanic tussle in the swimming pool should be well worth watching, but action on the bikes and in the basketball court will also draw plenty of eyes.

Stats Perform guides you through the events not to be missed.

TITMUS OUT TO TOP LEDECKY AGAIN

Katie Ledecky is one of the dominant forces in the pool, taking gold in each of her prior four individual Games finals since her 2012 debut as she headed to Tokyo, but she was upset in the 2020 opener.

Ariarne Titmus, the 20-year-old Australian, beat the United States' world record holder by more than half a second in the 400m freestyle final.

Now, Titmus is coming for Ledecky's crown again as the pair do battle in the 200m freestyle, where another victory would send a significant message.

TOUR STARS TAKE ON TIME TRIAL

There are no shortage of big names in the men's time trial, with a number of Grand Tour winners involved – including Geraint Thomas, no doubt determined to put on a show after his fall in the road race.

The last two men to head out perhaps represent the most likely Olympic champions, though, as Wout van Aert and Filippo Ganna go for gold.

Van Aert won the final two stages of the Tour de France, including a time trial on the penultimate day of the race.

FOCUS ON THE FOUR

The first rowing medals of the Games are to be handed out on Wednesday, and the women's four – back in the Olympics for the first time in 30 years – should provide plenty of intrigue.

World champions Australia changed their line-up for the Olympics, having not competed internationally since taking their title in 2019. Meanwhile, the Netherlands, world silver medallists and back-to-back European champions, have been dominant.

The two teams won their respective heats, but Australia's time of six minutes and 28.76 seconds was an Olympic best and almost five seconds quicker than the Dutch. Whether that chasm will remain when the boats are side by side is another matter.

TWO-WAY TUSSLE IN THE GYM

There is more gymnastics action to look forward, with the men's individual final taking place.

Home hope Daiki Hashimoto qualified with the best score and was outstanding for Japan in the team event, yet could only take silver as the hosts were pipped by the Russian Olympic Committee.

It was Nikita Nagornyy's floor routine which sealed that Russian success and he will be bidding for another gold, having trailed Hashimoto in second in qualification.

CAN DREAM TEAM RECOVER FROM NIGHTMARE START?

The United States' latest men's basketball title defence started in miserable fashion with a defeat to France, the team who eliminated them at the 2019 FIBA Basketball World Cup.

It was Team USA's first Olympics loss since 2004, but it is highly unlikely a second will follow as they face Iran. A big performance is needed regardless to calm the critics.

While France delivered the upset in the basketball, they face their own humiliation in the football. Only a two-goal win against hosts Japan, themselves needing a point, will secure progress through Group A for Les Bleus.

Simone Biles said she had put her "mental health first" after missing out on adding a fifth Olympic gold medal to her collection following an early withdrawal from the women’s team final.

The 24-year-old gymnastics icon revealed she was “dealing with things internally” after a disappointing performance on the vault.

Biles posted the lowest score of the first rotation on Tuesday as she landed awkwardly after failing to execute an Amanar, while only completing a Yurchenko 1.5 twist.

After she subsequently withdrew, Team USA had to settle for a silver medal behind the Russian Olympic Committee while Great Britain completed the podium.

Biles admitted that she was "fighting demons", explaining: "I just don't trust myself as much as I used to. I don't know if it's age. I'm a little bit more nervous when I do gymnastics. I feel like I'm also not having as much fun."

She added: "I say, 'put mental health first'. Because if you don't, you won't enjoy sport and won't succeed as much as you want to.

"So it's okay sometimes to sit out the big competitions to focus on yourself, because it shows how strong a competitor and person that you really are, rather than just battling through it."

OSAKA STUNNED

The big names continue to tumble in the women’s singles tennis event, with second seed Naomi Osaka defeated in straight sets.

The home favourite, who lit the Olympic cauldron on Friday, was denied a place in the quarter-finals after being ousted 6-1 6-4 by world number 42 Marketa Vondrousova.

This event marked Osaka’s first competitive tennis in two months since her early withdrawal from the French Open at the end of May, citing mental health issues.

The world number two is the latest of the big names to fall at the Tokyo Games, with top seed Ash Barty and third seed Aryna Sabalenka also suffering early exits.

"Of course, it's one of the biggest wins of my career," Vondrousova said. "Naomi is a great player, so I knew it would be a tough match. 

“I'm very happy with my play. I played amazingly in the first set, and then the second set was really tough. I'm just happy to be through."

ARGENTINA RECOVER TO SEE OFF SPRINGBOKS

Argentina recovered from a dreadful start to beat South Africa and book their place in the rugby seven semi-finals.

Trailing 7-0 after just under two minutes, the Pumas were then reduced to six men when Gaston Revol - who was reduced to tears - was shown a straight red card.

Nevertheless, they demonstrated tremendous resilience and character before eventually running out 19-14 winners.

Argentina will play Fiji in the last four after the reigning Olympic champions swept Australia aside 19-0.

Great Britain stormed back from 21-0 down to beat the USA, scoring four tries to secure a dramatic 26-21 victory.

Team GB will play New Zealand, who eased to a 21-10 success over Canada.

Simone Biles outlined the importance of athletes' mental health as she talked through her decision to sit out the women's team all-around final on Tuesday.

The gymnastics superstar's first final of the Tokyo Olympics attracted plenty of attention at the Ariake Gymnastics Centre, beginning a bid for a record-breaking six golds at one Games.

But the United States could only secure silver after Biles bowed out following her first routine.

Biles – the sport's premier performer – posted the lowest score of the first rotation (13.766) on the vault and immediately left the floor with a trainer.

Her absence from the remainder of the competition was confirmed by USA Gymnastics due to what the organisation said was a "medical issue".

But Biles opened up on the reasons for departure following the event, which was won by the Russian Olympic Committee.

Asked if she was injured, Biles said: "No, just my pride is hurt a little bit."

The 24-year-old added she was "fighting demons" and explained: "I just don't trust myself as much as I used to. I don't know if it's age. I'm a little bit more nervous when I do gymnastics. I feel like I'm also not having as much fun."

At a Team USA news conference, Biles offered a more positive message, following in the footsteps of Japan icon Naomi Osaka, who withdrew from a series of high-profile tennis events to preserve her welfare before representing her country in the Olympics on home soil.

"I say, 'put mental health first'," Biles said, asked if Osaka's stance was inspirational.

"Because if you don't, you won't enjoy sport and won't succeed as much as you want to.

"So it's okay sometimes to sit out the big competitions to focus on yourself, because it shows how strong a competitor and person that you really are, rather than just battling through it."

Biles would accept no credit for her team's medal, saying: "I didn't do my job, they came out and they stepped up.

"They did what they needed to do and more, last minute. This medal is all them and the coaches and it has nothing to do with me. They did it without me."

Even in the absence of spectators at the Ariake Gymnastics Centre there was still a palpable tension when Simone Biles left the arena after finishing just one event in the women's team final on Tuesday.

An eager press tribune ready to witness the star attraction of these Games fell flat in concern when Biles, after one unconvincing performance on the vault which yielded the lowest score of the first rotation, headed to the back with a trainer while the team were involved in frantic discussions.

The warning signs had been there during the warm-up when Biles failed to complete an Amanar, a difficult vault but routine for someone of her immense talent. When it happened again in competition there was almost a stunned silence, Biles seemed to be nearing tears and her team-mates flabbergasted by what had transpired.

She would return but, donned in a tracksuit, it was announced Biles would take no further part and the team of Jordan Chiles, Sunisa Lee and Grace McCallum would complete the night for Team USA. The United States could only take silver, marking their first team defeat at a Worlds or Olympics since 2010.

USA Gymnastics later announced Biles had been pulled due to an unspecified "medical issue" and that her condition for the other five events she is scheduled to appear at will be "assessed daily", while NBC Sports attributed a Team USA coach with saying Biles' withdrawal was not injury related and due to a "mental issue she is having".

Biles had opened up on the pressures the Olympics brings following Sunday's qualifying, during which she made some uncharacteristic mistakes in an error-strewn team performance that saw USA outscored by the Russian Olympic Committee in what proved an eerie prelude.

"It wasn't an easy day or my best but I got through it," Biles posted.

"I truly do feel like I have the weight of the world on my shoulders at times. I know I brush it off and make it seem like pressure doesn't affect me, but damn sometimes it's hard hahaha!

"The Olympics is no joke. BUT I'm happy my family was able to be with me virtually. They mean the world to me."

The concerns over Biles' well-being will stretch far beyond the watching press pack at the arena. Those tuning in around the world will greatly hope this is not the way this megastar's Games come to an end.

Moreover, so will the organisers of the Games, who are desperately relying on the biggest stars to bring some positive PR to an Olympics many never wanted.

Having already had cauldron lighter Naomi Osaka, who returned to represent Japan after a self-imposed two-month hiatus during which she opened up about her battles with depression and anxiety, beaten in the third round of the women's tennis earlier in the day, to see Biles not compete would represent another hammer blow.

The IOC had earlier described its digital audience figures for Tokyo 2020 as "very good", but as the only way for fans to watch these Games is from the comfort of their own homes, you would kind of expect that to be the case.

If you want an idea of how important Biles is to these Games, consider that IOC president Thomas Bach was seen in conversation with the star attraction before congratulating the gold medallists. Biles herself had shown her textbook humility by being among the first to congratulate the victors in a moment of sheer class.

For these Olympics, held in the midst of a deadly pandemic, to actually be remembered for the right reasons, Tokyo 2020 needs to showcase the successes of athletes securing their crowning glories despite the unthinkable challenges posed for over a year and a half.

Such concerns are of course secondary to the welfare of a 24-year-old woman, who confirmed she is not injured, carrying so many hopes and pressures, whose delivery of the message "put mental health first" is as, if not more, inspiring than her brilliance on the floor.

This was the first of six gold-medal opportunities for Biles. Her stacked programme includes what many predicted to be a routine defence of her all-around crown, while she is slated to appear in the finals of the beam, uneven bars, vault and floor exercise.

She has designs on winning the most gymnastic gold medals at a single Games (she already owns the co-record with four following her haul at Rio 2016), while three more would see her overtake Shannon Miller as America's most decorated Olympic gymnast.

Biles later said she is "dealing with something internally" and that things would be taken day by day for the rest of the Games.

Speaking at a news conference, she would elaborate on the issues she has been contending with.

"It's been really stressful this Olympic Games on the whole, with no fans, it's been a long process, a long year, and lots of variable," she said. 

"We're all a little bit too stressed out, we should be enjoying ourselves.

"Today was really stressful, we had a workout this morning, it went okay then that five-and-a-half-hour wait I was shaking, I could barely nap. I've never felt that way before a competition."

That we all hope she will compete again at this Olympics goes without saying. 

But, perhaps save for Osaka, there is arguably no athlete more important to these Games. And, as Osaka has gone to great lengths to demonstrate this year, protection of mental health and well-being must come before all else.

Simone Biles is "dealing with things internally" after she withdrew from the women's team final at Tokyo 2020 after just one rotation.

Biles was confirmed to have pulled out with a "medical issue" following a disappointing performance on the vault.

She landed awkwardly after failing to execute an Amanar and completing only a Yurchenko 1.5 twist.

Biles posted the lowest score of the first rotation on Tuesday before pulling out, with NBC reporting her withdrawal was down to a "mental issue she is having", according to comments from a Team USA coach.

Team USA were unable to defend their title and had to settle for silver, losing out to the Russian Olympic Committee, with Great Britain taking bronze.

But they were satisfied with the resilience they showed in the face of adversity, Biles indicating she would return for the women's all-around final on Thursday.

The now six-time Olympic medallist told BBC Sport: "I'm okay, just dealing with things internally that will get fixed out in the next couple of days.

"It's made us stronger [as a team] for sure."

Asked if she would be back on Thursday, Biles replied: "Yes."

Biles is the defending champion in the all-around from Rio 2016, where she also won gold in the vault and floor exercise.

Simone Biles managed just one event before being pulled from the rest of the women's team final in the artistic gymnastics with what was described as a "medical issue".

The usually brilliant Biles struggled on the vault, landing awkwardly after making a hash of an Amanar and completing only a Yurchenko 1.5 twist.

Biles posted the lowest score of the first rotation on Tuesday, which saw Team USA fall behind the Russian Olympic Committee, with a 13.766.

In worrying scenes, Biles then left the floor with a trainer immediately after the first rotation, with the team in deep discussion. While she did return to the floor in a tracksuit, it was later announced that she would take no further part in proceedings.

"Simone Biles has withdrawn from the team final competition due to a medical issue," USA Gymnastics tweeted. 

"She will be assessed daily to determine medical clearance for future competitions. Thinking of you, Simone!"

This event was the first of six for Biles at Tokyo 2020, where she entered as the overwhelming favourite to defend the all-around title she won at Rio 2016.

Uncertainty is now sure to surround Biles' fate for the rest of these Games with any further absence representing a huge blow, given her status as one of the marquee athletes for an Olympics delayed by a year due the coronavirus pandemic.

NBC reported during the broadcast that Biles' withdrawal was not related to injury and was down to a "mental issue she is having", according to comments from a Team USA coach.

The 24-year-old gymnast had revealed on Instagram how she felt the "weight of the world" was on her shoulders after helping Team USA qualify for the final in Tokyo.

"It wasn’t an easy day or my best but I got through it," Biles wrote.

"I truly do feel like I have the weight of the world on my shoulders at times. I know I brush it off and make it seem like pressure doesn’t affect me, but damn sometimes it's hard hahaha!

"The Olympics is no joke. BUT I'm happy my family was able to be with me virtually. They mean the world to me."

The Tokyo Olympics are now in full swing and there are another 22 gold medal events to come on an action-packed Tuesday at the Games.

Plenty of focus will be on the Tokyo Aquatics Centre once again, where four medals are on the line, while the women's triathlon will also take centre stage.

Simone Biles, Naomi Osaka and Katie Ledecky are just some of the superstar names that will be in action on the fourth full day of the 2020 Games.

Stats Perform picks out of some of the standout action to look out for.

CAN BILES PUT BLUNDERS BEHIND HER?

Biles struggled to find top gear in her Games entrance on Sunday, albeit making it through to each of her finals, and there is no room for any slip-ups in the women's team final.

The Russian Olympic Committee finished above the United States at a major event for the first time since 2010 in qualifying, setting up an intriguing battle in the final.

The pressure is on Suni Lee, Jordan Chiles, Grace McCallum and indeed Biles, the latter of whom is aiming to add to the four golds won in Rio five years ago.

USA-JAPAN MEET IN SOFTBALL FINAL

Team USA's women's softball team recovered from behind to beat Japan 2-1 in their final round-robin game and finish top of the standings.

Japan finished second and the two sides are therefore set to face off in a huge gold medal match at Yokohama Baseball Stadium.

Mexico and Canada meet in the bronze medal contest earlier on Tuesday in a tasty warm-up match for the main event.

LEDECKY AND TITMUS RESUME RIVALRY

After winning four golds in Rio five years ago, Ledecky had the chance to add four more to her collection in Tokyo.

She fell short in the first of those events, however, with Australia's Ariarne Titmus taking gold in Monday's gripping 400m freestyle final.

While a medal is not on the line on Tuesday, Ledecky will be eager to lay down a faster time than her rival in the 200m freestyle heats ahead of Wednesday's showpiece.

OSAKA GOES AGAIN

Face of the Games Okaka followed up lighting the Olympic cauldron on Friday with victories over Zheng Saisai and Viktorija Golubic in her first two matches in the tournament.

The four-time grand slam winner has a quick turnaround in matches as world number 41 Marketa Vondrousova awaits in the third round on Tuesday.

Fellow home favourite Kei Nishikori is also in action in the men's event, with Marcos Giron standing between him and the last 16.

WOMEN'S TRIATHLON TOUGH TO CALL

There was drama before the men's triathlon had even officially got underway on Monday, with an inflatable boat carrying photographers causing a false start.

Norway's Kristian Blummenfelt won the competition and now it is over to the women, with 54 athletes in contention to claim gold.

The field is wide open this time around, though the likes of Katie Zaferes and Georgia Taylor-Brown, of Team USA and Great Britain respectively, will have their eyes on the top prize.

Another superb day for Japan saw the host nation surge to the top of the medal table at the Tokyo Olympic Games on Monday.

Japan now have eight golds after winning Olympic titles in three different sports, the most unexpected of which came in table tennis.

The mixed doubles team of Jun Mizutani and Mima Ito came from two games down to eventually prevail after seven games against China's Xu Xin and Liu Shiwen.

China won all four table tennis titles at Rio 2016 and had been expected to dominate again, only to come unstuck as Japan won the first gold in this new event.

Further joy for Japan came as 13-year-old Momiji Nishiya triumphed in the women's street skateboarding while Shohei Ono was victorious in the men's 73kg category in judo.

Second behind Japan are the United States, who took two shooting golds on day three as well as the men's 4x100m freestyle title in the pool.

China did not add to their tally of six gold medals, one fewer than the USA, having come up short in another event where they had a team of heavy favourites.

Cao Yuan and Chen Aisen were edged out in the men's 10m synchronised platform, with British divers Tom Daley and Matty Lee winning gold.

That was one of three golds for Great Britain, who moved up to fifth in the medal table thanks also to Adam Peaty retaining his 100m breaststroke title and Tom Pidcock dominating in the men's cross-country mountain bike race.

The Russian Olympic Committee sits fourth after adding three golds, the headliner being victory in the men's artistic gymnastics team all-around final. 

Meanwhile, Hidilyn Diaz made history for the Philippines, become the country's first Olympic gold medallist by prevailing in the women's 55kg weightlifting.

The Russian Olympic Committee (ROC) won artistic gymnastics men's team gold and 13-year-old Momiji Nishiya spoke of her desire to become a global icon after making history in Tokyo.

Denis Abliazin, David Belyavskiy, Artur Dalaloyan and Nikiti Nagornyy became the first European winners of the Olympic men's team event since 1996 on a tense Monday evening at the Ariake Gymnastics Centre.

Nagornyy went into the final routine on the floor knowing he had to make up for lower scores from Abliazin and Dalaloyan.

He stepped up under huge pressure, ensuring the ROC (262.500) edged out Japan (262.397) as China (261.894) had to settle for bronze.

Dalaloyan tore his Achilles in mid-April, yet he made an incredible recovery to take his place on the top step of the podium.

He said: "After an injury like this, I appreciate the work I did even more. And now I know all of the work I did wasn't for nothing. This medal is absolutely priceless.

"When I came to Tokyo, I still couldn't do the vault or the floor exercise. On the third or fourth day I was able to perform a little bit."

Asked about watching Nagornyy on the floor with gold on the line, he added: "The nervousness was unreal. We prepared for everything, especially the floor exercise.

"Before the floor exercise, we were deciding if Nikita would do the easy routine or hard one; we decided to go with the easy and stable routine because we knew what score we needed. We knew we had enough and he would be absolutely clean."

NISHIYA WANTS WORLDWIDE FAME

The first Olympic gold medal in the women's skateboarding went the way of Japanese teenager Nishiya in the street event.

Nishiya, at the age of 13 years and 330 days, became the second-youngest Olympic gold medallist after American diver Marjorie Gestring took the top prize in the 1936 Games (13y 268d).

Her triumph completes a clean sweep for the host nation in the street event of the skateboarding – a sport introduced for these Games – after Yuto Horigome's success in the men's competition at Ariake Urban Sports Park on Sunday.

Nishiya kept her nerve after Rayssa Leal of Brazil failed to land her final jump – she would have been the youngest ever individual Olympic champion.

Having missed the landing with her first two tricks, Nishiya registered a score of 15.26 after nailing her final three attempts, bettering Leal's 14.64. Nishiya had only just got a gold medal around her neck when she spoke of her plan to secure another.

"I want to be the famous one who everyone in the world knows. I want to win at Paris 2024, too," she said.

PERSISTENCE PAYS OFF FOR DALEY AS GB THRIVE

British diver Tom Daley won his first Olympic gold medal in his fourth Games, teaming up Matty Lee to take the synchronised 10m platform title.

The tears flowed for Daley, 27, on the podium after he and Lee ended a China dominance of this event that stretched back to the Sydney 2000 Games.

Two-time bronze medallist Daley and Lee finished with a score of 471.81, just 1.23 points ahead of silver medallists Cao Yuan and Aisen Chen at the Tokyo Aquatics Centre, where ROC's Aleksandr Bondar and Viktor Minibaev took bronze.

Daley said: "To finally have this gold medal... I’ve been diving for 20 years, it’s my fourth Olympic Games. Lots of people would have counted me out, being the older person, but I'm in the best shape physically.

"I still can't honestly believe what is happening. That moment, being about to be announced as Olympic champions, I was gone. I was blubbering."

It was also a dream day for Tom Pidcock, who became the first Brit to win an Olympic medal of any kind in mountain biking and made it a gold.

There was no surprise when Adam Peaty became the first British swimmer to defend an Olympic swimming title in the 100 metres breaststroke, while Lauren Williams (taekwondo) and Alex Yee (triathlon) won silver medals.

DIAZ LIFTS HERSELF INTO THE RECORD BOOKS

Hidilyn Diaz put her name in the record books by becoming the first athlete from the Philippines to win an Olympic gold medal.

Diaz took the 55-kilogram weightlifting title on a historic day at the Tokyo International Forum,

She did so in style, finishing with an Olympic record total lift of 224kg, overtaking world record holder Qiuyun Liao of China with her final lift in the clean and jerk.

Zulfiya Chinshanlo took bronze for Kazakhstan.

The third full day of the Tokyo Olympics sees 21 gold medals up for grabs during a packed programme.

Plenty of eyes will be on the Tokyo Aquatics Centre, where four swimming golds will be on the line, while the first women's skateboarding champion will be crowned.

The rugby sevens event gets under way and the men's triathlon will also take place.

Stats Perform picks out some of the standout action.

LEDECKY STEPS UP GOLD QUEST

After winning four golds in Rio five years ago, Katie Ledecky has the chance to add four more to her collection in Tokyo, starting with the women's 400m freestyle.

The United States competitor set a world record time in the event in 2016, but she will face a big challenge from Australia's Ariarne Titmus this time.

Titmus was marginally faster than Ledecky in the heats, though whether that edge will count for anything on the day remains to be seen.

WILL IT BE ANOTHER PEATY BLINDER?

Great Britain's Adam Peaty is nothing short of a phenomenon in the world of swimming and will be looking to retain his 100m breaststroke title.

Peaty qualified for the final in a dominant manner, his time of 57.56s just two hundredths of a second off his own world record pace.

Arno Kamminga of the Netherlands is expected to be Peaty's biggest threat, having produced a personal best of 57.80s in the previous heat.

MORE SEVENS HEAVEN FOR FIJI?

Fiji's triumph in the men's rugby sevens was one of the more remarkable stories of the Rio Games and the islanders will now be out to retain their title in Tokyo over the coming weeks.

They begin their group campaign on Monday with games against tournament hosts Japan and then Canada later in the day.

MEN'S TRIATHLON WIDE OPEN

The men's triathlon is a tough one to call, with back-to-back champion Alistair Brownlee not taking part in this year's event.

The likes of Alex Yee, Kristian Blummenfelt, Morgan Pearson and Tyler Mislawchuk are among those to watch in one the standout events at any Games.

BILES SURVIVES, NOW MEN MUST THRIVE

After Simone Biles struggled to find top gear in her Games entrance on Sunday, albeit making it through to each of her finals, Monday's gymnastics event is the men's team final.

Japan are the defending champions and led the way in qualifying, but they are expected to face stiff competition from China and the Russian Olympic Committee team. Watch out for Russian maestro Nikita Nagornyy and Japan's Daiki Hashimoto among a star-studded cast.

OSAKA BACK IN ACTION

It is proving to be a busy Games for Naomi Osaka, who followed lighting the Olympic cauldron on Friday with a first-round tennis win on Sunday.

Japan's four-time grand slam winner is back on court on Monday, looking to inch closer to the women's singles final. Awaiting her is Swiss world number 50 Viktorija Golubic, and it will be their first match encounter. Men's title hopefuls Novak Djokovic and Daniil Medvedev are among those also due in action.

WOMEN'S SKATEBOARDING MAKES ITS DEBUT

Japan's Yuto Horigome made history on Sunday by winning the first Olympic gold in men's skateboarding. On Monday, it is the turn of the women.

Among those competing in the event are Kokona Hiraki of Japan and Team GB's Sky Brown, who are aged 12 and 13 respectively.

After plenty of falls and drama in the men's equivalent, expect more of the same in this inaugural event. 

United States men's basketball coach Gregg Popovich insists his side's defeat to France in their first outing at Tokyo 2020 should not be considered a surprise result.

Team USA have won gold in the last three Games, but they saw a 25-game winning streak in the tournament come to an end on Sunday against an inspired France side.

Les Blues, who also beat a much-fancied USA in the World Cup quarter-finals in 2019, are ranked seventh in the FIBA rankings but proved too strong for the world's top team with an 83-76 win at the Saitama Super Arena.

Despite his side's long unbeaten run in the competition coming to an end, Popovich – taking charge at his first Games – was quick to put the loss into some perspective.

"People shouldn't be surprised that we lost to the French team or the Australian team or the Spanish team or the Lithuanian team," he told reporters. 

"It doesn't matter who it is – the gap in talent shrinks every year, as there are more and more great players all over the world. 

"And you need to give the French team credit for playing well. They were more consistent than we were at both ends of the court. It's as simple as that."

STARS ALIGN FOR HISTORY-MAKING ZOLOTIC

Sunday was a positive day on the whole for Team USA – especially compared to Saturday, when they failed to win a medal on the opening day of a Games for the first time since Munich 1972 – as they picked up four gold, two silver and four bronze.

That haul includes a maiden gold in the women's taekwondo thanks to teenager Anastasija Zolotic, who beat Tatiana Minina of the Russian Olympic Committee (ROC) in the final of the -57kg weight category event. 

"My eight-year-old self was running around the schoolyard saying I was going to be Olympic champion but she could never have imagined what this moment is like," Zolotic said. 

"It's unbelievable. It really hasn't sunk in yet. I can't believe it. I'm in a bit of shock. I'm just trying to wrap my head around it. It feels wonderful. I came here confident and ready to take the gold. The stars were aligned."

Zolotic's win came on the back of two-time Olympic champion Jade Jones suffering a shock elimination to Refugee Olympic Team member Kimia Alizadeh in the last 16, denying the Team GB athlete a shot of winning a historic third gold.

BILES BOUNCES BACK, CHUSOVITINA WAVES GOODBYE

A lot of focus has been on Simone Biles heading into the Games, though she had a rare off day as the USA finished behind ROC in the women's gymnastics qualifying.

Biles, who won four golds and a bronze in Rio, was penalised on both floor and vault but still scored a respectable 14.166 to book a spot in the final.

While Biles still has time on her side, both in Tokyo and in the long term, the 2020 Games will be the last for Uzbekistan's Oksana Chusovitina, who bowed out on Sunday after a record-setting eighth appearance at the Olympics.

Chusovitina, at the age of 46, just missed out on qualifying for the vault event and was given a standing ovation by the small number of people inside the arena.

To put Chusovitina's remarkable run of appearances into perspective, she made her debut at the Games in 1992, some five years before Biles was born.

"It was really nice. I cried tears of happiness because so many people have supported me for a long time," she said. "I didn't look at the results, but I feel very proud and happy. I'm saying goodbye to sports. It's kind of mixed feelings.

"I'm alive, I'm happy, I'm here without any injuries, and I can stand on my own."

KEEPING IT IN THE FAMILY

Japanese pair Uta and Hifumi Abe made Olympic history as they became the first siblings to win gold medals on the same day of a Games in an individual sport, both enjoying success in judo on day two in Tokyo.

Uta won the women’s 52kg competition, defeating France's Amandine Buchard. A closely contested bout went to a golden score, with Abe crucially claiming ippon to settle the final in her favour.

The two-time world champion cried tears of joy in the aftermath, admitting: "I don't know, maybe it may not have been appropriate but I couldn't hold myself back."

Older brother Hifumi made it a family double, overcoming Vazha Margvelashvili of Georgia to triumph in the men's 66kg final.

"This has turned out to be the greatest day ever," he said. "I don't think we, as brother and sister, could shine any brighter on this stage known as the Tokyo Olympics. I'm so happy."