The Netherlands had reason to celebrate and cause for concern at the Izu Cycling Centre on Thursday, while Great Britain's Matthew Walls stormed to victory in the omnium.

Olympic debutant Shanne Braspennincx capped an incredible comeback from a heart attack six years ago to take gold in the women's keirin final, as the Netherlands defended the title Elis Ligtlee won in Rio 2016.

However, her triumph came after team-mate Laurine van Riessen had crashed out in the quarter-finals, taking Team GB's Katy Marchant with her.

Van Riessen was knocked unconscious and had to be taken off the track on a stretcher before she was transferred to hospital for further checks.

"Coach Hugo [Haak] said that our team doctor is with her. I sent her a message but it all went so fast and I had to go on," Braspennincx said when asked about Van Riessen's injury.

"Hugo does that. He told me she's in good hands; you have to focus on your own race now. I was worried about her, she went to the hospital, but at that moment I had to make the switch and focus on myself.

"It's tough to see. I know it's part of [racing] but this is what you really don't want and she was in very good shape as well."

Van Riessen clipped the wheel in front of her as she was about to enter the final lap, sliding straight into the unfortunate Marchant in the process.

"I think that’s just bike racing, wrong place, wrong time, I just hope everyone's okay that was in the crash. I think I'm okay, just a bit battered and bruised but I'm alright," Marchant told BBC Sport.

"I needed to finish the race in case there was something that came up on the results. I'm not really sure what happened, wrong place, wrong time, I just got caught up it in it."

A SURREAL SUCCESS

Braspennincx's triumph is made even more remarkable by the heart attack she suffered in 2015.

The Netherlands have now won the women's keirin event on two of the three times it has been held at the Olympic Games, and it brought up the nation's 10th gold medal on the track.

She finished ahead of Ellesse Andrews – the second woman from New Zealand to win an Olympic medal in the velodrome after Sarah Ulmer in 2004 – and Canada's Lauriane Genest. 

"I'll have to let it sink in first, it feels surreal," Braspennincx said. "I can't believe it. I don't know what it was like. I went in the moment, I had to go and I held it. 

"I think every athlete can say it's a very long [journey], especially this one. In Rio I was a spare rider because I had an injury. I had a long way to come back, and to celebrate it like this is worth it.

"There is amazing medical stuff still behind me. They tested me through, through and through in order to get the green light. In January 2016 I got to be an athlete again. My journey started again, really, really slow, and with a lot of stuff back. And now I am here in 2021, all good."

TEAM GB'S WONDER WALLS

Despite Marchant's disappointment, there was joy for Team GB in the men's omnium, as 23-year-old Olympic debutant Walls claimed gold in dominant fashion.

Walls, who tested positive for COVID-19 in March, accumulated 153 points across the four disciplines – with the entire event condensed into the space of three hours – to finish ahead of Campbell Stewart and defending champion Elia Viviani.

It brought up Team GB's first track cycling gold at Tokyo, adding to their successes in the BMX and mountain biking events.

Team GB have now won 16 golds and 50 medals overall at the close of racing at the velodrome. Ed Clancy (2012) and Mark Cavendish (2016) have previously taken bronze and silver in the men's omnium, while Laura Kenny goes into Sunday's women's event as the two-time defending Olympic champion.

"I managed to get a good lead coming into the end. It's been a hard day but I came into that points race with a bit of a lead and breathing room," Walls told BBC Sport.

Britain are the first nation to win three Olympic medals in the men's omnium, while Team GB have now won gold in nine of the current 12 events held on the cycling track at the Games.

Stewart's silver, meanwhile, means New Zealand have taken 19 medals in Tokyo, surpassing their record tally of 18, set five years ago in Rio.

WORLD CHAMPION LAVREYSEN ENDS KENNY'S DEFENCE

Jason Kenny's defence of his Olympic gold in the men's sprint came to an end as he was overcome by Dutch world champion Harrie Lavreysen.

Kenny took gold in London and Rio, but the 33-year-old's reign is now over, and Lavreysen looks good to push on for the biggest prize.

The Dutchman was pushed hard in his two races against Kenny, however, with the Team GB rider forcing a two-lap sprint in the second quarter-final heat before Lavreysen pulled away on the final turn.

Lavreysen must get past another Briton in the semi-finals, with Jack Carlin up next.

Carlin looked sharp and showed complete control in his quarter-final win over Maximilian Levy of Germany.

"Another day in the bag, see what happens tomorrow but the legs are feeling good, it's all to play for tomorrow," Carlin told BBC Sport.

"My legs are feeling alright, they're sore but everyone's are sore at this point of the week. I think we take each race as it comes, stick to our principles, keep calm and what will be, will be."

Asked about Kenny's valiant effort, Carlin added: "I think you saw today he was struggling a bit from fatigue. He still went out there and gave it his all, that's what Olympic champions do."

The other semi-final will see Denis Dmitriev face the Netherlands' Jeffrey Hoogland, meaning the Dutch are guaranteed a medal.

Megan Rapinoe scored direct from a corner as she and fellow United States veteran Carli Lloyd hit doubles to sink Australia 4-3 in the Olympic Games bronze medal game.

Australia's replies came from Sam Kerr, Caitlin Foord and Emily Gielnik in the seven-goal feast at Ibaraki Kashima Stadium.

It was 36-year-old Rapinoe and 39-year-old Lloyd who stole the show, though, on what may prove to be farewell appearances for the superstar duo.

Whether they play on in the short term for the national team remains to be seen, but this was likely a final outing at the Olympics for both, and they went out in style.

Rapinoe opened the scoring in the eighth minute when her wicked in-swinging corner from the left evaded everybody and found the net.

Kerr levelled seven minutes later with her 48th goal for Australia – a new national team record – when her shot proved too powerful for Adrianna Franch, but it was soon Rapinoe's time again.

The standout player from the 2019 World Cup smashed in her second goal of this game on the volley, connecting sweetly from around 12 yards after Alanna Kennedy sliced an attempted clearance.

Lloyd, who became the outright second most-capped player in US history by making her 312th appearance, got in on the goals just before half time. Her thumping left-footed shot across goal found the right corner, putting the US 3-1 up.

Lloyd scored again in the 51st minute after another Kennedy error, this time a weak header back to her goalkeeper allowing Lloyd a clear run on goal, with the striker slotting home.

That made her the US team's all-time highest scorer in Olympic women's football with 10 goals. Lloyd won Olympic gold in 2008 and 2012, with Rapinoe also on the triumphant latter team in London.

Australia got back into this game with a header from Foord after 54 minutes, and Kerr headed against the left post two minutes later. Substitute Gielnik rattled in a delicious late third for Australia, but they could not find a fourth.

Katarina Johnson-Thompson explained how it was a "miracle" for her to even reach the starting line in the heptathlon after her Tokyo dream was ended by a calf injury.

World champion Johnson-Thompson was well in medal contention in the 200m event of the women's heptathlon, yet ultimately ended up trudging over the line in tears.

The 28-year-old, who ruptured her Achilles tendon in December, pulled up with a calf problem. However, she refused to get in the wheelchair that was rolled out to the track, and instead got over the line on her own.

On Thursday, Johnson-Thompson revealed the arduous journey she has gone through to ensure she could participate in Tokyo.

"I don't know where to begin in trying to explain how I feel. Only a handful of people understand what I've been through," she wrote in a statement posted to her official Twitter account.

"Even a smaller amount understand the mental and physical challenges I've faced trying to make it back in time through a pandemic after my Achilles ruptured the back end of December. I started the year in a wheelchair and I was not willing to end my Olympic campaign the same way.

"To make it to the line was a miracle. To not only do that, but to be on my way to putting a decent score together, is heart-breaking. I truly believed I was capable of winning a medal despite having up to half a year of missed training."

Johnson-Thompson's Olympic spirit was on show for all to see and the 2018 Commonwealth Games champion is proud of her efforts, though she conceded this is a blow that may take her some time to come back from. 

"More than ever, I am proud that I showed up, put myself out there and tried," she continued.

"It would have been very easy to shy away and pull out, to say I wasn't ready and blame the injury but I'm not that type of athlete or person.

"I am a fighter, I'm gritty and I find it extremely hard to give up. I can rest easy knowing I applied myself every single day and pushed until I couldn't push anymore.

"I've sacrificed so much, moving my entire life to France five years ago away from my family and friends.

"I've lost heart knowing that the work my team and I have done for the last eight months was for this outcome and I hate that my story has played out in more heartbreak. I've been knocked so many times and got back up, but it will take a lot of time for me to process this reality."

Kevin Durant admitted Team USA were caught with "a nice haymaker" from Australia before clambering to their feet and reaching another Olympic final.

The Americans scored a 97-78 victory at the Saitama Super Arena, putting a fourth successive gold medal at the Games within reach.

But at one stage in the second quarter Durant and co trailed 41-26, with the Australian Boomers making a fast and purposeful start to the semi-final that they could not maintain.

It was at the point the USA side fell 15 points behind that they took a timeout, and from that stage onwards they dominated, Durant leading the team with 23 points and nine rebounds.

Australia shot just 25 of 61 – 41 per cent – from the field, whereas USA managed 38 of 74 and dominated the boards 44-29 in what became a convincing victory.

"We've been down 15 in games before and came back," Durant said. "It doesn't matter what level it was at, or where it's at. A lot of guys have been in that position before. We know how to handle ourselves.

"We kept our composure and we knew that we could get back into the game pretty fast, if we got stops and got out and ran. So we've got to give credit to Australia because they came out and hit us with a nice haymaker, but we were able to get back up and get that lead back."

It came as no surprise to Durant that Australia began as they did.

"We knew Australia would come out fast and hit us with a nice punch. We know that teams want to get us down early, see how we respond," said the Brooklyn Nets star.

"A lot of these guys got continuity for years and years, so they know how to play with each other. I feel like a lot of teams are expecting us to fold early.

"We stuck with it, stuck with our principles, made a couple of switches on defence, and we were able to get some momentum going into the half. Guys came out with that intensity, making shots as well."

The 32-year-old Durant is chasing a third gold medal of his Olympic career, having played on the London 2012 and Rio 2016 teams.

For Jrue Holiday, who is coming off an NBA championship-winning season with the Milwaukee Bucks, this is a first Olympic experience.

Like Durant, he saw no need for panic after Australia began Thursday's semi-final so strongly.

By half-time, Australia's lead had been cut to just 45-42, and a 32-10 third quarter for the USA showed their firepower.

"I think we played the game long enough to know that there's always a chance," Holiday said. "So we took that six minutes in the second quarter and kind of ramped it up, and went into half-time in the position that we liked."

Australia have finished fourth in Olympic men's basketball four times, never going further and claiming a medal.

They will have a bronze-medal game to come in Tokyo and must pick themselves up to go again.

Jock Landale scored 11 points against the USA, and the Melbourne United star accepted it was tough for Australia to keep up their early high level.

"It's hard. It's really hard. They're great basketball players, they're smart basketball players," Landale said.

"They figure out what you're doing and they just find ways to exploit it. I think we started turning the ball over in that third quarter and they were just living in transition, and that's tough to beat. They're the most athletic guys in the world, so I think that's probably where we lost them."

Max Scherzer has started life with the Los Angeles Dodgers in style, tossing down 10 strikeouts in their 7-5 victory over the Houston Astros in MLB on Wednesday.

Scherzer joined the Dodgers from the Washington Nationals upon last week's MLB Trade Deadline.

The 37-year-old right-hander had 10 K's across seven innings, only allowing five hits and two runs.

Scherzer becomes the seventh pitcher to strike out 10 or more players in their first Dodgers start since the franchise moved to Los Angeles.

The pitcher's display fuelled the 52,724 fans at Dodger Stadium, sparked after striking out Jose Altuve on four pitches.

"The crowd was definitely into it and you can feed off that, you definitely get some adrenaline from that," Scherzer said.

"To go out there and pitch well and to have the fans ask for a curtain call for me, I've never had that happen, so that's a cool moment and something I'll never forget."

Baez stars for Mets, Gausman finds form

Javier Baez dazzled in the New York Mets' 5-3 win over the Miami Marlins that ended their three-game losing run. Baez hit a solo homer in the eighth but also completed an incredible second-inning slide for home plate.

San Francisco Giants pitcher Kevin Gausman re-captured some form as he sent down eight strikeouts across six innings as they triumphed 7-1 over the Arizona Diamondbacks.

Two-way star Shohei Ohtani always elicits a lot of excitement but he had no at-bat impact yet tossed down six strikeouts across six innings, allowing only one earned run, in the Los Angeles Angels' 2-1 win over the Texas Rangers.

New recruits Adam Duvall, Jorge Soler and Joc Pederson all delivered for the Atlanta Braves, with the former pair homering and the latter with a double in their 7-4 victory over the St Louis Cardinals.

Bryce Harper starred again with his 17th home run of the season as the Philadelphia Phillies won 9-5 over the Washington Nationals.

Mejia tough shift for Indians

The Cleveland Indians had mounted a good run in the American League Central but their 8-6 loss to the Toronto Blue Jays leaves them 52-53, having lost three of their past four games. They were not helped after trailing 8-0 after three innings as Jean Carlos Mejia allowed seven hits and eight earned runs early.

Rizzo makes Yankees history

Anthony Rizzo hit his third New York Yankees home run to become the first player with RBI in each of his first six games in their long franchise history as they won 10-3 over the Baltimore Orioles. The Yankees have been around since 1903.

Wednesday's results 

Cincinnati Reds 6-5 Minnesota Twins
Tampa Bay Rays 4-3 Seattle Mariners
Milwaukee Brewers 4-2 Pittsburgh Pirates
Oakland Athletics 5-4 San Diego Padres
Philadelphia Phillies 9-5 Washington Nationals
New York Yankees 10-3 Baltimore Orioles
Toronto Blue Jays 8-6 Cleveland Indians
Boston Red Sox 4-1 Detroit Tigers
New York Mets 5-3 Miami Marlins
Los Angeles Angels 2-1 Texas Rangers
Kansas City Royals 9-1 Chicago White Sox
Atlanta Braves 7-4 St Louis Cardinals
Chicago Cubs 3-2 Colorado Rockies
San Francisco Giants 7-1 Arizona Diamondbacks
Los Angeles Dodgers 7-5 Houston Astros

Mariners at Yankees

Rizzo will look to continue his hot form for the Yankees (58-49) when they host the Seattle Mariners (58-51) in the first of their four-game series.

Favourite Grant Holloway said nerves got the better of him after finishing second to Jamaica's Hansle Parchment in the men's 110 metres hurdles Olympic final.

The American led at the halfway mark but faded over the final 20 metres as he was beaten by his 31-year-old rival.

Parchment triumphed with a season-best time of 13.04 seconds, ahead of Holloway in 13.09, lucky to scrape ahead of Jamaican Ronald Levy who took bronze with 13.10.

Holloway and Parchment had run in the same heat and semi-final prior to the final, with the American winning both, before falling short in the all-important race.

"I think the anxiousness and the nerves got the better of me towards the end and I got sloppy with my form," Holloway said. "He got me this time but I'll make sure I get him in the next."

He added: "Hats off to Hansle for an amazing race. I was watching him when I was in high school. He's a hell of a competitor. He has an amazing race plan, he executed to the best of his ability."

Parchment admitted he learned from losing to Holloway in the previous two runs.

"I made some changes to my start, because I knew if I was going to catch up, I had to be closer in the first half," Parchment said. "I think I ran through pretty well. I maintained composure. It was a great race."

Portugal's Pedro Pichardo earned gold medal glory with a national record 17.98m in the men's triple jump.

Pichardo's triumphant effort came with his third attempt, while China's Zhu Yaming claimed silver with a personal best of 17.57m. Burkina Faso's Hugues Fabrice Zango took the bronze with 17.47m.

USA's defending champion Ryan Crouser threw an Olympic record 23.30m to win the men's shot put gold.

Crouser bettered the Olympic mark he set five years ago in Rio de Janeiro to win from countryman Joe Kovacs (22.65m), while New Zealand's Tomas Walsh (22.47m) claimed bronze.

EARLY SCARE AS USA REACH FINAL

The United States trailed by 15 points in the second quarter against Australia but rallied to qualify for the men's basketball gold medal match.

USA won 97-78 over Australia, who have never won an Olympic medal in men's basketball having finished fourth four times.

The Boomers had raced to a commanding position early on as Team USA struggled from beyond the arc.

Yet the reigning Olympic champions reduced the margin to three points by half-time and went up several gears with a 32-10 third quarter.

Brooklyn Nets star Kevin Durant top-scored again with 23 points and nine rebounds, while Devin Booker had 20 points.

USA will face either France or Slovenia in the final as they chase a fourth straight gold medal.

CARRINGTON MAKES NEW ZEALAND HISTORY

New Zealand's Lisa Carrington added a third Tokyo 2020 gold medal to her haul, landing the title in the women's kayak single 500m final.

Carrington claimed her fifth-ever Olympic gold with a strong victory in 1:51.216, from Hungary's Tamara Csipes and Denmark's Emma Jorgensen.

She becomes the first athlete from New Zealand to win five Olympic gold medals, surpassing the four of Ian Ferguson, also in canoe sprint between 1984 and 1988.

Carrington is the fourth woman at Tokyo 2020 to win three gold medals, after Australian swimmers Emma McKeon (four) and Kaylee McKeown (three) and South Korean archer An San (three).

GERMAN ADDS GOLD IN OPEN WATER

After winning bronze in the 1,500m in the pool, Germany's Florian Wellbrock won the men's marathon swimming in open water.

Wellbrock won in one hour, 48 minutes and 33.7 seconds across 10 kilometres, finishing 25.3 seconds ahead of Hungary's Kristof Rasovszky for silver, with Italy's Gregorio Paltrinieri earning bronze.

The size of the German's victory was the biggest margin in Olympic marathon swimming history.

“It’s a little bit unreal," Wellbrock said. "The first seven (kilometres) of this race felt really easy."

AUSSIE SKATEBOARDING WINNER

Keegan Palmer won Australia's first-ever skateboarding gold medal with two amazing runs in the men's park final.

The 18-year-old's first run scored 94.04 before a throwaway second round. Palmer backed it up on his final run with a staggering top score of 95.83.

Brazilian Pedro Barros was next best with 86.14 for silver, while Cory Juneau claimed bronze with 84.13.

The event was the final skateboarding medal opportunity from the sport in its debut Olympics.

Team USA shook off a slow start to overwhelm Australia 97-78 and reach the gold medal game as Gregg Popovich saw the best and worst of his team in Thursday's semi-final.

A fourth successive men's basketball title for the US is now within sight, but coach Popovich will know another shaky opening might be asking for trouble.

Here, as in the quarter-final against Spain, the American team went through the gears and eventually piled on the points.

They had trailed 41-26 with 5:23 to go in the second quarter, which was when Popovich called a timeout, having seen enough of his team being pulled this way and that by Patty Mills and the lively Boomers.

Dante Exum's dunk from Jock Landale's delicious assist gave Australia that 15-point cushion, but that was as good as it got for them.

From that point on, the game flipped, the US team going on a 48-14 run through to the end of the third quarter as they built a 74-55 lead, with Australia unable to get close enough to worry their opponents.

Kevin Durant led the USA with 23 points and nine rebounds, albeit making just one of seven three-point shots, while Devin Booker backed him up with a 20-point game.

The clash of France and Slovenia in the second semi-final later on Thursday would dictate whom Popovich must prepare his side to face next.

As well as four in a row, the USA are targeting a seventh men's basketball gold medal in the last eight Olympic Games, going back to the 1992 'Dream Team' triumph in Barcelona.

Tokyo Olympic organisers have apologised after Ukraine's artistic swimming medallists were misidentified as being Russian by a venue announcer.

The Ukraine pair of Marta Fiedina and Anastasiya Savchuk won bronze in their duet free routine event on Wednesday, finishing behind pairs from the Russian Olympic Committee (ROC) and China.

However, Fiedina and Savchuk were named as ROC competitors by a French-language announcer, causing embarrassment for Tokyo 2020 chiefs.

It was a particularly unfortunate mistake given the military conflict between Russia and Ukraine.

Tokyo 2020 organising committee spokesperson Masa Takaya said: "I would like to apologise to the team Ukraine.

"During the victory ceremony yesterday for the artistic swimming duet, there was mistakenly announced a different country and region's name for the team Ukraine who claimed the bronze medal.

"It was purely an operational mistake, so we would like to apologise for that."

Takaya did not immediately clarify that the mistake was to confuse the Ukrainians as belonging to the Russian team.

Asked for more detail, Takaya said: "French, English and Japanese, these three languages are used. The French language [should] have said team Ukraine; however, it said the ROC instead.

"Of course, people noticed that and the person in charge of the announcement apologised and there was an announcement of apology at the same time, so this was a purely operational mistake."

Tokyo Olympic organisers have apologised after Ukraine's artistic swimming medallists were misidentified as being Russian by a venue announcer.

The Ukraine pair of Marta Fiedina and Anastasiya Savchuk won bronze in their duet free routine event on Wednesday, finishing behind pairs from the Russian Olympic Committee (ROC) and China.

However, Fiedina and Savchuk were named as ROC competitors by a French-language announcer, causing embarrassment for Tokyo 2020 chiefs.

It was a particularly unfortunate mistake given the military conflict between Russia and Ukraine.

Tokyo 2020 organising committee spokesperson Masa Takaya said: "I would like to apologise to the team Ukraine.

"During the victory ceremony yesterday for the artistic swimming duet, there was mistakenly announced a different country and region's name for the team Ukraine who claimed the bronze medal.

"It was purely an operational mistake, so we would like to apologise for that."

Takaya did not immediately clarify that the mistake was to confuse the Ukrainians as belonging to the Russian team.

Asked for more detail, Takaya said: "French, English and Japanese, these three languages are used. The French language [should] have said team Ukraine; however, it said the ROC instead.

"Of course, people noticed that and the person in charge of the announcement apologised and there was an announcement of apology at the same time, so this was a purely operational mistake."

World number 26 Madison Keys was one of three seeded players to be eliminated in the second round of the Silicon Valley Classic in San Jose on Wednesday.

The American third seed was beaten by China's Zhang Shuai 7-5 7-6 (7-5) in one hour and 39 minutes.

Keys sent down 7-1 aces but Zhang, ranked 51st in the world, was excellent on return, converting four of her 11 break points.

Fourth seed Daria Kasatkina was also in danger after losing the first set but rallied to win 3-6 7-5 6-3 over France's Caroline Garcia.

"It was a tough match. From my point of view, I think the level of the game was very good, and I'm really happy that I was able to turn the match in the second set," Kasatkina said in the on-court interview.

Ninth seed Alison Riske was emphatically beaten by Croatian Ana Konjuh 6-1 6-4 in one hour and 13 minutes, while sixth seed Petra Martic bowed out to Poland's Magda Linette 7-5 7-6 (7-5).