Real Madrid have confirmed new signing David Alaba has tested positive for coronavirus.

Alaba, who played in all of Austria's Euro 2020 matches, agreed to join Madrid following the expiration of his contract with Bayern Munich, where he had spent his entire career, winning 27 trophies.

The 29-year-old – who has taken Madrid's number four shirt vacated by Sergio Ramos – was officially unveiled at the Santiago Bernabeu on July 21.

However, his pre-season preparations have been hit by a positive COVID-19 test.

Madrid revealed the news in a brief statement on their official website. They did not clarify whether Alaba was asymptomatic. 

Alaba, who has signed a five-year deal with Los Blancos, is the second Madrid player to test positive in as many weeks, after Karim Benzema also contracted the virus.

With Madrid having agreed to sell Raphael Varane to Manchester United, Alaba is set to lead a new-look defence this season.

Carlo Ancelotti's team were beaten 2-1 by Rangers in a pre-season friendly on Sunday – Alaba did not feature, but has been training with the squad.

"Trust the Process", but for how long?

That mantra – after tanking out and starting from the bottom eight years ago – has become synonymous with the team's culture and identity since former 76ers general manager Sam Hinkie started a drastic rebuild of Philadelphia's roster and psyche in 2013.

The long-term vision, in pursuit of a first NBA championship since 1983, has delivered All-Stars Joel Embiid and Ben Simmons, however the 76ers have not progressed beyond the Eastern Conference semi-finals.

Doc Rivers was brought in to replace Brett Brown and deliver the long-awaited title, yet the same old issues and questions remain after the top-seeded 76ers were sensationally eliminated by the fifth-seeded Atlanta Hawks in the second round.

While Embiid narrowly missed out on the MVP award, Philadelphia's latest failure has only amplified pressure on shot-shy Simmons amid growing speculation over his future at Wells Fargo Center following a forgettable playoff campaign.

With president of basketball operations Daryl Morey tasked with turning the contenders into champions, will he blow it all up or run it back in 2021-22

Embiid excels but there's more to come from Philly's unofficial MVP

His own harshest critic, Embiid sets the bar high, demanding the absolute best from himself and the 76ers in pursuit of a coveted championship. A cornerstone of the franchise, the 27-year-old soared to new heights in 2020-21, leading Philly to their first Eastern Conference title since 2000-01.

A knee injury proved costly in the MVP race; he finished second to Denver Nuggets big man Nikola Jokic. If he had featured in another 10-15 games, Embiid may have become the first 76ers player since Allen Iverson 20 years ago to be crowned Most Valuable Player. Accolade or not, there was no denying Embiid's impact on his team and the league last season.

Embiid's improvement was evident as he went from averaging 23.0 points per game in 2019-20 to 28.5 this time around. His +5.5 increase ranks sixth all-time among All-Star centers for largest increase in points per game from one season to the next, only behind Hall of Famer Wilt Chamberlain (+12.0 with the Philadelphia Warriors in 1962), Jokic (+6.5 in 2021), David Robinson (+6.4 with the San Antonio Spurs in 1994), Los Angeles Lakers great Shaquille O'Neal (+5.9 with the Orlando Magic in 1994) and Patrick Ewing (+5.9 with the New York Knicks in 1990).

Embiid posted impressive numbers for field-goal percentage (51.3), three-point percentage (37.7 which increased to 39.0 in the playoffs) and free-throw percentage (85.9), as well averaging 10.6 rebounds and 2.8 assists (which improved to 3.4 in the postseason).

Only scoring leader Stephen Curry (32.0), Bradley Beal (31.3) and Damian Lillard (28.8) – all guards – averaged more points per game than Embiid.

The heart and soul of this Philly team, it is clear when Embiid steps onto the court. In 2020-21, the 76ers held a 45-17 win-loss record with their big man involved but that 72.6 winning percentage dropped to 50.0 without him as they slumped to 11-11.

Philadelphia regressed in almost every single category in Embiid's absence – points per game (115.4 to 110.2), field-goal percentage (48.6 to 46.1), three-point percentage (38.7 to 34.9), assists per game (24.3 to 22.7), blocks per game (6.3 to 6.0) and fast-break points (15.6 to 13.4). At the other end of the floor, rival teams benefited as their points per game (107.6 to 109.8), field-goal percentage (44.7 to 46.9), three-point percentage (36.7), rebounds per game (42.8 to 43.3) and points in the paint (45.4 to 47.9) all rose.

His exploits earned a fourth All-Star selection, with Embiid now eligible to sign a four-year, supermax extension after being selected to the All-NBA Second Team. While there has long been question marks over his health and fitness, his form merits a monster pay rise.

Worryingly for the rest of the league, Embiid is not a player who rests on his laurels. The Cameroonian is determined to deliver a title to the city of Brotherly Love.

"Losing, obviously, it's gonna take a toll on me, and it does and it's doing it, but it’s also on me," said Embiid after Philly's playoff exit. "I gotta be better. I gotta take another step when it comes to taking care of my body and my game as a whole, because I still feel like I have a lot of untapped potential that people haven't really seen."

How do you solve a problem like Ben Simmons?

"I love being in Philly. I love this organisation," Simmons said after he was subjected to boos by Philly fans after their Game 7 loss to the Hawks. "The fans are great, great people. I had a bad series. I expect that. It's Philly."

Former number one pick Simmons, however, may not have a choice on the matter amid intensifying trade talk.

The 24-year-old had no fourth-quarter field-goal attempts in his last four games of the playoffs. He is the only NBA player in the last 20 seasons to have four consecutive postseason games with no field-goal attempts in the fourth quarter during a season in which he was an All-Star.

Fresh off elimination, Rivers was asked if he thought Simmons could be a guard on a championship team, and he told reporters post-game: "I don't know the answer to that right now."

Since then, Rivers has said he wants the player to remain as the 76ers have a plan for the Australian star, who will skip the Olympic Games in Tokyo to focus on his skillset.

But after four seasons in the league, there has been no improvement from three-time All-Star Simmons in one fundamental area – shooting.

An elite defender and creator, debate around Simmons centres on his offence or lack thereof, with the 76ers handicapped by his unwillingness to shoot.

Simmons' field-goal percentage has regressed, dropping from 58.0 in 2019-20 to 55.7 this season – he only managed worse in his 2017-18 rookie campaign (54.5).

He averaged just 10.1 field-goal attempts in 2020-21 – a career low, which dropped to 7.9 in the playoffs. It is the same story with his scoring as it dropped to a career worst 14.3 points per game and 11.9 in the postseason – both career lows.

Then there is Simmons and free throws. He was exposed by rival teams as they regularly sent him to the line, with the Melbourne-born guard making just 25 of 73 shots in the 2020-21 playoffs. His 34.2 free-throw percentage is the lowest ever in a single postseason.

Simmons' unwillingness to shoot – he passed on a wide-open dunk during the closing stages against the Hawks, instead passing to Matisse Thybulle – who was fouled and made just one of the two free throws, irked Embiid.

"I'll be honest," Embiid said after the game. "I thought the turning point was when we - I don't know how to say it - but I thought the turning point was just we had an open shot and we made one free throw.

"We didn't get a good possession on the other end and Trae [Young] came back and he made a three and then from there down four, it's on me. I turned the ball over and tried to make something happen from the perimeter. But I thought that was the turning point."

Having reportedly considered the idea of using Simmons as part of a deal to prise James Harden from the Houston Rockets in January before the former MVP eventually joined the Brooklyn Nets, Morey has a decision to make with the 76ers in the win-now window.

Doc's Game 7 woes continue

Is Rivers the man to complete the process for the 76ers?

A proven winner with Eastern Conference rivals the Boston Celtics, Rivers landed on his feet following his exit from the Los Angeles Clippers, named All-Star coach after guiding the 76ers to a 49-23 record atop the east, ahead of the star-studded Nets and Milwaukee Bucks.

With Doc on the sidelines, Embiid vaulted himself to within a whisker of the MVP as the 76ers clinched the easiest path to the Conference Finals. After a humiliating series sweep to the Celtics in the opening round inside the bubble at Walt Disney World Resort the previous year, things looked on the up for Philly.

However, it was an all too familiar story for Rivers. His team collapsed.

Rivers suffered a fourth consecutive Game 7 defeat to tie the longest streak ever by an NBA head coach, after former Sacramento Kings and Rockets coach Rick Adelman also lost four in a row from 2002 to 2009.

The 76ers blew an 18-point lead in Game 4 against the Hawks before surrendering a 26-point advantage at home to Atlanta in Game 5. That came after Doc's Clippers somehow squandered a 3-1 series lead to the Nuggets in 2020.

"Listen, this team last year got swept in the first round. We had a chance to go to the Eastern finals. I'm not gonna make this into a negative year,” Rivers said.

Rivers has 29 losses with a chance to clinch a playoff series – the most defeats by a coach in NBA history. His 34.1 win percentage is the worst ever among coaches with 20-plus games.

The 59-year-old is under the microscope on the back of this latest failure, having not progressed past the second round of the playoffs since the 2012 postseason in Boston.

Verdict: Revolution

Morey and general manager Elton Brand have their work cut out this offseason, with Simmons' future at the top of the list.

Despite a horrendous playoff series, there is still plenty of value around Simmons. A host of teams are already reportedly circling, and there is a general consensus that it is time for player and franchise to go their separate ways.

Simmons could do with a change of scenery and the 76ers could use a legitimate shooter/scorer. Now it is up to Morey to weave his magic and supplement Embiid's MVP-calibre ability. Damian Lillard, perhaps? What about Bradley Beal?

Then there is Philadelphia's bench and depth. The 76ers ranked 13th in the NBA for points per game from their reserves (37.3). It remains to be seen whether the likes for Furkan Korkmaz will still be around come tip-off in 2021-22, so boosting the team's bench and three-point shooting is paramount if Philly are to get beyond the second round and complete the process.

Primoz Roglic eased to an emphatic time trial victory to clinch gold at the Tokyo Olympics, claiming Slovenia's first gold medal in any cycling discipline.

Roglic was pipped to the post in the 2020 Tour de France, when compatriot Tadej Pogacar stole a march on him in the final time trial.

The Jumbo-Visma rider's attempts to wrest the title away from Pogacar proved fruitless this year, as he suffered a huge crash early on in the race and was eventually forced to abandon.

He did not make the podium in Saturday's road race, Pogacar taking that honour for Slovenia, but Roglic hit back with a supreme display on Wednesday.

The 31-year-old finished the 44.2km course in a time of 55:04, more than a minute ahead of his nearest rival, Tom Dumoulin of the Netherlands.

Roglic was never out of the top two. He led by 0.04 seconds after 15km, yet had dragged that lead out to 42.34 seconds at the 37km time check.

Rohan Dennis got the bronze, becoming the second Australian to win a medal in both road and track cycling, after Kathy Watt in 1992.

Dumoulin, a Jumbo-Visma team-mate of Roglic, became the first Dutchman to win two Olympic medals on the road, following his time trial silver in Rio.

Pre-event favourite Wout van Aert of Belgium was unable to keep the pace and finished down in sixth, while world TT champion Filippo Ganna had to settle for fifth.

TWO UP FOR SLOVENIA

Pogacar decided not to push himself for Wednesday's event, making Roglic Slovenia's hope, and he certainly delivered with what was a brilliant display of power.

Roglic's gold was Slovenia's first in cycling and the European nation's second at these Games, following Benjamin Savsek's success in the men's canoe slalom on Monday, equalling their best tally at a Games, which came in Sydney 21 years ago.

Dumoulin's silver, meanwhile, brought up the Netherlands' seventh medal of Wednesday. It has equalled their most successful single day (August 11, 1928) at a Games.

Team GB's two-time gold medallist Geraint Thomas finished 12th, capping a frustrating week after he crashed out of the road race.

"It was tough," the Welshman told BBC Sport. "I tried to start at a pace that we thought would be there or thereabouts for a medal. Then I heard I was 50 seconds down on Roglic which wasn't great for morale.

"It's been a super hard five weeks and it just seems to be one thing after the next. I just need to stay positive and try to keep going."

VAN VLEUTEN GETS GOLD, VAN DER BREGGEN GOES OUT ON A HIGH

Two of Dumoulin's countrywomen contributed to the Netherlands' medal count on Wednesday, with Annemiek van Vleuten finally claiming gold.

The 38-year-old thought she had won the road race on Saturday, but was mistaken. However, there was no such error on this occasion, as she won by over a minute on the 22.1km course.

She is the third-oldest woman to win an Olympic gold for the Netherlands, after dressage rider Anky van Grunsven (aged 40 years, 230 days) and rower Marit van Eupen (38y, 326d), with that duo winning in Beijing in 2008.

After her silver medal on Saturday, Van Vleuten is the sixth female cyclist to claim a podium place in the road race and the individual time trial at the Games.

Dutch cyclist Annemiek van Vleuten finally has an Olympic gold medal after obliterating the field in the time trial.

She won by nearly a minute over the 22.1km course, with Switzerland's Marlen Reusser in silver and Van Vleuten's team-mate Anna van der Breggen claiming the bronze.

Marlen Reusser of Switzerland finished second, while Anna van der Breggen boosted the Netherlands' count with a bronze – her third Olympic medal.

A surprised Van der Breggen was initially disappointed with her effort, but it was enough to ensure the Netherlands claimed multiple medals in a cycling event at the Games for the first time.

"There's not so much of a story. The time trial did not feel so good. It was not my best time trial. I thought it was nothing, and in the end it was a bronze medal, so I'm really happy to have a medal," she said.

The medal caps off a stellar career for Van der Breggen, who is retiring at the end of the season.

"A bronze medal is a great way to finish this all. It's my third Olympic medal and that makes me proud," she added. "I can look back on many great races and on a great career."

Paula Badosa was forced to withdraw from her quarter-final against Marketa Vondrousova and taken from the court on a wheelchair after suffering from heatstroke at Tokyo 2020.

Tuesday saw heavy downpours in the Japanese capital, but the hot and humid conditions from earlier in the week returned early on Wednesday with temperatures at times going above 30 degrees Celsius.

Vondrousova, who had shocked home favourite Naomi Osaka in the previous round, won the first set 6-3 at Ariake Tennis Park but her opponent was clearly struggling as she prepared to play the second set.

She required medical assistance to depart the court, as Vondrousova progressed to the final four.

VONDROUSOVA COMMENTS ON THE HEAT

The conditions for the tennis in Tokyo have been a quite literal hot topic with both Daniil Medvedev and Novak Djokovic stating matches should start at 3pm so the majority can be played as temperatures cool.

Vondrousova explained how it was playing in the searing heat, saying: "It was a big struggle from the beginning.

"I warmed up in the morning and I felt it was really hot and humid. Also, I was a bit tired from yesterday because I had doubles too.

"But I knew she had too [singles and doubles]. I felt like we both were struggling from the beginning.

"I was just thinking, you have to stay there mentally, just fight for every point and just see what happens. It's good for me that I can have some rest now.

"It's all about the head too. You have to stay there mentally and fight. Even when you lose the point, you have to get up and fight again. It's really a struggle here with the weather, but that's it, we have to fight."

OLYMPICS LIKE A SLAM FOR SVITOLINA

Next up for Vondrousova is a last-four meeting with Elina Svitolina, the fourth seed and highest-ranked player left in the women's draw.

The Ukrainian was a 6-4 6-4 victor over Camila Giorgi and talked up the significance of winning Olympic gold.

"I know that for Ukraine, [the Olympics] is a really big thing," Svitolina said. 

"I value the Olympics as a grand slam, and I tried to prepare to bring my best tennis. Here I am in the semi-final, and I can get a chance to get a medal. It's very special for me, but I try to take one match at a time."

Belinda Bencic (9) came through 6-0 3-6 6-3 against Anastasia Pavlyuchenkova on the other side of the draw. She will face Elena Rybakina (15), who was too good for seventh seed Garbine Muguruza in a 7-5 6-1 win.

Ash Barty was beaten along with partner Storm Sanders in the women's doubles quarter-finals earlier on Wednesday but the world number one bounced back to win her first-round mixed doubles match with partner John Peers.

The Australian duo beat Argentina's Horacio Zeballos and Nadia Podoroska 6-1 7-6 (7-3).

Daniil Medvedev told the chair umpire "I can finish the match but I can die" as he struggled with the suffocating heat at Tokyo 2020.

A 6-2 3-6 6-2 win over Fabio Fognini on Wednesday was enough to see Medvedev through to the last eight at Ariake Tennis Park.

But the world number two struggled with 72 per cent humidity that meant an already hot 31 degrees Celsius felt like 37 degrees Celsius on the heat index.

An extreme heat rule meant Medvedev and Fognini were allowed to leave the court for 10 minutes at one stage of the contest.

Medvedev was in visible discomfort before serving, between points and at changeovers. 

He had two medical timeouts before being asked by the chair umpire Carlos Ramos whether he could continue.

"I can finish the match but I can die," the Russian replied to Ramos, per ESPN. "If I die, are you going to be responsible?"

After the match, Medvedev – who along with Novak Djokovic has been vocally calling for matches to start later in the day to counteract the heat – described his struggles.

He said: "Even from the first set, I didn't feel good enough with my breathing. That's why I called the physio. I felt like my diaphragm had blocked. 

"I couldn't breathe properly. I think it was the most humid day we have had so far.

"Then, on the second set, I just had darkness in my eyes, like between every point I didn't know what to do to feel better. 

"I was bending over, and I couldn't get my breathing together. I was ready to just fall down on the court.  

"I knew there was a 10-minute break. So I went under the cold, freezing shower.

"When you have such a change of temperature and go out on the hot court, you can fully cramp, and it finishes the match for you, either that or you feel better. I was lucky I felt better.

"I don't care too much [about closing the roof], to be honest because I don't know if they have AC [air-conditioning]. 

"It can be actually more humid and hot when they close it, but they should start the matches later. I said it in the first round, and I'll continue saying it.

"All the players I know said this is not normal to start at 11am [local time]. 

"[Djokovic] went to ITF and talked to them, and they gave him reasons - I heard maybe from tomorrow they're going to change it, but let's see."

Following the Medvedev match, organisers were quoted as saying they were "considering" making a change, starting from Thursday's action.

Paula Badosa also struggled on Wednesday and ultimately had to leave the court in a wheelchair after retiring with heatstroke from her quarter-final match against Marketa Vondrousova. 

The Spaniard also withdrew from her mixed doubles match later alongside Pablo Carreno Busta, ending their hopes.

Carreno Busta is still in the singles and will face Medvedev next.

Vondrousova, who had won the first set before her opponent withdrew, said: "It was a big struggle from the beginning because I warmed up in the morning and I felt it was really hot and humid.

"Also, I was a bit tired from Monday because I had doubles too. But I knew [Badosa] had [played singles and doubles] too. 

"I felt like we both were struggling from the beginning. I was just thinking, you have to stay there mentally, just fight for every point and just see what happens."

Netherlands' Annemiek van Vleuten finally ended her hunt for an Olympic gold as the 38-year-old triumphed in the women's time trial on Wednesday.

Van Vleuten's confusion in the road race made headlines over the weekend as she celebrated when crossing the line in second place, thinking she had won.

However, it was Anna Kiesenhofer – who is currently without a professional team – who triumphed, having forged a breakaway with 40 kilometres remaining; Van Vleuten failing to realise the Austrian had finished well ahead.

Yet Van Vleuten, who looked set to win gold in Rio only to crash out on the final approach, finally clinched the top prize, and despite her veteran status, she is determined to push for more.

"I think it will sink in tonight maybe, not at the moment," said Van Vleuten, who became the second Dutch cyclist to win the individual time trial at the Games, after Leontien van Moorsel in 2000 and 2004.

"My story started in Rio but the story has not ended yet, because I will not stop. But this is really beautiful. It makes it extra beautiful... extra beautiful."

She also insisted she never lost faith in her ability, despite her troubles.

"I knew after the road race that I was in really good shape, and no one believed. They were talking about different stuff but not about my performance, but in my heart I knew that my preparation had been optimal and that I was in really good shape here," Van Vleuten added.

"If you know that you're really close to the gold sometimes you tend to think only about the mistakes you can make on this quite technical course, about the corners, about if it starts to rain or it's slippery, or that you make a mistake.

"But I was in a good flow today and I was not thinking about mistakes. I was turning it around, like, 'Where can I gain time?'"

Van Vleuten, at the age of 38 years and 293 days, is the third-oldest women to win Olympic gold for the Netherlands.

She finished ahead of Marlen Reusser and compatriot Anna van der Breggen, who equalled Van Moorsel as the Dutch cyclist with the most Olympic medals (three).

Andy Murray conceded he was hurting after going down to a narrow defeat in the men's doubles quarter-finals at Tokyo 2020 but insisted he did not regret prioritising the competition over the singles.

Team GB duo Murray and Joe Salisbury suffered a heart-breaking loss to Croatian pair Marin Cilic and Ivan Dodig at Ariake Tennis Park on Wednesday.

They won the first set but Cilic and Dodig ultimately prevailed 4-6 7-6 (7-2) 10-7, with Murray rueing how close he and Salisbury had come to a semi-final berth that would have guaranteed him a shot at a medal.

Despite falling just short, the two-time Wimbledon winner insisted he did not regret pulling out of the singles tournament to focus on the doubles as he manages a quad injury.

Instead, the singles gold medallist in London and Rio was only looking back to scrutinise some of the decisive points that went against his team.

"No, I don't regret that decision," Murray said. "I think we put ourselves in a really good position to win and do well here. 

"This is the one, it hurts a lot, losing that one, because you get through it, and you get two matches for a medal. 

"We were just so close. I just wish I could have done some stuff differently at the end of the match, so I regret that, not the decision [not] to play singles."

Tokyo could be the last Olympics for Murray, who has had a torrid time with injuries and will be 37 when Paris 2024 comes around.

"Yeah it is just hard – I hate losing," he said when asked about the potential of it being his last Games.

"I don't know if I’ll get the opportunity to play again, I wanted to try and win a medal with Joe. 

"It is difficult to take, it is disappointing – you have regrets and think about points and things you should have done differently. 

"I have always loved team sports. I love being a part of the Olympics as I am sure Joe would say. 

"It is his first time, so I am sure he will be hungry to come back and do more, and do better next time. 

"I know all the tennis players on our team have really enjoyed it and loved the experience, I just wish we could have done better."

Murray added that his leg "felt fine" during the loss, but would monitor how his injury heals before deciding whether he will be able to play the US Open, which starts at the end of August.

Kevin Durant feels the key to the United States' confidence-boosting win over Iran at the Tokyo Olympics was down to becoming more selfish and playing with freedom.

Team USA's 25-game winning run in the men's basketball at the Games was ended by France last week but they responded with a 120-66 victory against Iran on Wednesday.

That loss to France followed exhibition defeats to Australia and Nigeria in the build-up to the event, leading to questions over the cohesion of the record 15-time gold medallists.

But Gregg Popovich's side answered those critics against Iran with a comprehensive victory in which they played fast, aggressive basketball throughout.

Damian Lillard, one of those to come in for heavy criticism following the opening-game defeat, top-scored with 21 points, all from beyond the arc.

USA knocked down 19 3-pointers and 22 of their 37 shots (62 per cent) inside the arc as they showed signs of the quality that has taken them to three successive gold medals.

Brooklyn Nets forward Durant insists the chemistry of the side was never in question as he highlighted the changes made between matches.

"After a tough loss last game, today we came out with more freedom as individuals and took the shots that we normally like to take," Durant said.

"They went in tonight, and we guarded up, so it was a good step.

"I felt like we were in sync last game, but like I've been saying, it's a make or miss game today.

"We created good shots last game and I think today it's the continuity of what we've been doing over the last week. We finally capitalised on the stuff that we've been working on.

"Like I said, our chemistry has been great since day one. We're all excited to be here, I mean this is the Olympics, this is the national team. 

"But I think we were a bit too unselfish early on and tried not to step on toes. That bit us before.

"Tonight the guys came out there and were super aggressive to look for their shot but also keep everybody involved, and we were able to make some shots. 

"Damian came out, got it scorching for us, so we're going to need that going forward."

Head coach Popovich rotated his roster against Iran by bringing in Jrue Holiday and Devin Booker, who were brought off the bench against France.

"In the last game we have to play two 'bigs' and I think that might have clogged it up a bit for us all offensively," Durant added.  

"Defensively we've been solid the whole time, but offensively we were trying to find our rhythm. 

"I played the four [position], so I was able to stretch the floor a bit and give guys space and we were able to get some confidence and knock some shots down."

A victory over the Czech Republic on Saturday will guarantee the world's top-ranked side a place in the quarter-finals.

That next match will also provide Durant with his next opportunity to surpass Carmelo Anthony as USA men's basketball all-time Olympic top scorer.

Durant managed 10 points against Iran, moving him to within five of Antony's record (336).

Ash Barty has followed up her shock women's singles defeat by crashing out of the women's doubles after an epic clash with Czech pair Barbora Krejcikova and Katerina Siniakova.

World number one Barty was stunned in the first round of the women's singles on Sunday by Spain's Sara Sorribes Tormo but teamed up with Storm Sanders in the doubles, with the Australian pair reaching the quarter-finals.

However, Krejcikova and Siniakova proved too strong in a three-set thriller, winning 3-6 6-4 10-7.

"You never quite have their measure,” Barty said. "It's disappointing but there's only a couple of points in that match, here and there and it's a different result.

"We did everything right today but just weren't able to win those big points when it mattered most."

Barty's medal hopes are now entirely focused on the mixed doubles, where she has partnered with John Peers.

Andy Murray's bid to become the first male to win four Olympic tennis medals ended with defeat to Croatia's Marin Cilic and Ivan Dogic in the men's doubles.

Murray, teaming up with Joe Salisbury, went down in two hours and 18 minutes after also winning the first set. The Croatian pair won 4-6 7-6 (7-2) 10-7.

The two-time Olympic gold medalist had withdrawn from the men's singles on Sunday due to a right quad injury, preferring to focus on playing doubles. TeamGB have not fielded a mixed doubles team.

TITMUS DOUBLES UP, LEDECKY LIFTS FOR GOLD

Ariarne Titmus backed up her women's 400m freestyle gold medal from Monday with another triumph, getting the better of rival Katie Ledecky to win the 200m free.

The 20-year-old Australian won the final ahead of Hong Kong's Siobhan Bernadette Haughey and Canada's Penny Oleksiak, while Ledecky finished back in fifth.

Ledecky would claim her sixth Olympic gold medal, triumphing in the women's 1500m free, with the US claiming a rare one-two as Erica Sullivan grabbed the silver ahead of Germany's Sarah Kohler.

After being beaten twice by Titmus earlier in the meet, Ledecky said: "I approach each race with a belief in myself. It's the attitude I've always had that's why I've been so successful. Anything can happen, [the attitude I go in with is] I can beat the world record in this race. 

Japan's Yui Ohashi won the women's 200m individual medley, Hungarian favourite Kristof Milak powered to victory in the men's 200m butterfly and Great Britain triumphed in the men's 4x200m freestyle relay.

STEERING ERROR COSTS GB IN ROWING

Australia claimed two gold medals in the rowing at Sea Forest Waterway as Great Britain were left to lament a wayward finish in the men's four final.

Australian quartet Alexander Purnell, Spencer Turrin, Jack Hargreaves and Alexander Hill won in 5:42:76 ahead of Romania and Italy who claimed silver and bronze respectively.

Italy's late charge almost saw a collision with Great Britain, who finished in fourth, after veering towards the neighbouring Italian boat, narrowly avoiding a clash of oars.

GB's Oliver Cook, who steered the men's coxless four, told BBC Sport: "I do (have the steering). I need to diagnose it but I feel I screwed up a bit and as I was closing in at the end and taking big strokes at the end going for the line I forgot the steering and that’s what cost us to be honest, cost us a medal."

Australia also won the women's four narrowly ahead of the Netherlands by 0:34 seconds, with Ireland claiming the bronze more than five seconds back.

Romania secured its first gold medal at the Tokyo Olympics by winning the women's double sculls final, while France triumphed in the men's equivalent.

The Netherlands and China triumphed in the men's and women's quadruple sculls finals respectively.

RADRADRA DREAMING OF FIJI SEVENS GOLD

New Zealand will take on 2016 gold medalists Fiji in the final of the men's rugby sevens on Wednesday evening.

Fiji went through to the gold medal match with a 26-14 triumph over Argentina, who will take on Great Britain for bronze.

New Zealand were too strong for the British, winning 29-7 in their semi-final, with two tries each to captain Scott Curry and Regan Ware.

Former NRL star Semi Radradra, who plays for Fiji after switching codes in 2017 and scored a try against Argentina, said: "Playing in the Olympics is a blessing for me. I never knew I would be here.

"I think it is everyone's highlight to win a gold medal in the Olympics. That is our aim and we try to give back to our people at home."

USA RESTORES CONFIDENCE IN BASKETBALL

Team USA restored some confidence following their first-up loss to France with a comprehensive 120-66 thrashing of Iran in men's basketball.

USA played fast throughout, wasting no time in offense, with Damian Lillard top scoring with 21 points, all from beyond the arc.

Chicago Bulls guard Zach LaVine had eight assists along with his 13 points while Devin Booker, who played in the NBA Finals last week, scored 16 points and had five rebounds and three steals.

USA head coach Gregg Popovich rotated his roster on and off the court, sharing minutes, as hos team piled on 38 points in the last quarter to round out a comprehensive victory.

In Group B, Germany defeated Nigeria 99-92 despite Jordan Nowra's 33-point haul.

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."

Los Angeles Dodgers' star Cody Bellinger produced an unbelievable error gifting the San Francisco Giants a decisive run in their 2-1 victory in the MLB on Tuesday.

With scores locked at 1-1 after the sides traded runs in the fifth and sixth innings, Bellinger inexplicably threw several feet over third baseman Justin Turner, allowing Buster Posey in for the go-ahead run.

Bellinger is normally at center field but was moved to first base to ease the stress on his sore hamstring, but that came back to bite the Dodgers.

At the bottom of the eighth, Dodgers reliever Blake Treinen had walked Posey and Mike Yastrzemski, before Darin Ruf grounded to second baseman Max Muncy who threw to Bellinger for an out.

But then the first baseman opted to send the ball to third to try out Posey, only to deliver a costly wayward throw.

"I don’t know how I would have thrown it that high. It was a horrible throw," Bellinger said. "I’ll go back and watch it on video and see what happened on that play.”

Home runs for Ohtani and Tatis

Shohei Ohtani's Los Angeles Angels may have lost 12-3 to the Colorado Rockies at home but he provided a highlight with a two-run home run in the fifth inning with his side 10-0 down.

The homer registered 110.4 mph exit velocity and a projected distance of 463 feet. It was also Ohtani's league-high 36th home run this season.

Fernando Tatis Jr also homered, bringing up his 31st of the season, with a two-run shot in the San Diego Padres' 7-4 victory over the Oakland Athletics. The Padres were trailing 3-0 at the time.

Eloy Jimenez creamed a decisive three-run homer which travelled 459 feet to lift the Chicago White Sox to a 5-3 triumph over the Kansas City Royals.

Bryce Harper hit a rare inside-the-park home run as the Philadelphia Phillies lost 6-4 to the Washington Nationals.

Joey Votto was feeling it as he hit two home runs as the Cincinnati Reds won 7-4 over the Chicago Cubs.

Diamondbacks downed by struggling Rangers

The Texas Rangers ended their 10-game losing streak with a 5-4 victory over the Arizona Diamondbacks, who continue to struggle. The Diamondbacks allowed all five runs in the fourth inning and slump to a 31-71 record, having only won 12 games on the road from 53, which is the best worst away record in the majors.

Riley's six-RBI game

Austin Riley hit a grand slam and a two-run home run as the Atlanta Braves won 12-5 over the New York Mets. The third baseman moved up to 19 homers for the season, recording his second-ever career grand slam, totalling six RBI for the game.

Tuesday's results

Washington Nationals 6-4 Philadelphia Phillies
Milwaukee Brewers 9-0 Pittsburgh Pirates
Miami Marlins 7-3 Baltimore Orioles
Atlanta Braves 12-5 New York Mets
New York Yankees 4-3 Tampa Bay Rays
St Louis Cardinals 4-2 Cleveland Indians
Texas Rangers 5-4 Arizona Diamondbacks
Cincinnati Reds 7-4 Chicago Cubs
Chicago White Sox 5-3 Kansas City Royals
Detroit Tigers 6-5 Minnesota Twins
Colorado Rockies 12-3 Los Angeles Angels
San Francisco Giants 2-1 Los Angeles Dodgers
San Diego Padres 7-4 Oakland Athletics
Houston Astros 8-6 Seattle Mariners

Dodgers at Giants

Two of the best meet on Wednesday when the San Francisco Giants (63-37), leaders in the National League, host reigning world champions, the Los Angeles Dodgers (61-41).

Katie Ledecky called on a source of inspiration close to home as she ended her wait for a gold at the Tokyo Games with victory in the women's 1500m freestyle final.

Ledecky, who Olympic great Micheal Phelps hailed as "the best female swimmer that we have ever seen", had endured a frustrating start to the Games, failing to defend the 200 metre and 400m free golds which she won at Rio 2016.

Australia's Ariarne Titmus has instead enjoyed the breakthrough to stardom this time around, but Ledecky finally struck gold in Tokyo as she powered to glory in the maiden women's 1500m event.

It took her total of Olympic golds to six – the 24-year-old becoming the fourth female swimmer to reach that mark, after compatriots Jenny Thompson (eight) and Amy van Dyken (six), and Germany's Kristin Otto (six).

Ledecky, who clocked in at 15:37.34, is also just the fourth American woman to claim six golds, after Thompson, Van Dyken and Allyson Felix.

Erica Sullivan clinched silver to seal a one-two for Team USA, and Ledekcy revealed her thought process following a disappointing fifth-place finish in the 200m race.

"After the 200, I knew I had to turn the page very quickly and in the warm-down pool I was just thinking of my family," said Ledecky, who has now won gold medals at three different Games, following success in London, at the age of 15, and Rio.

"Each stroke I was thinking of my grandparents. They're the toughest four people I know and that's what helped me get through that.

“It means a lot. People maybe feel bad that I'm not winning everything, but I want people to be more concerned about other things in the world. People are truly suffering. I'm just proud to bring home a gold medal to Team USA.”

Sullivan's silver handed the USA's first one-two finish in a women's swimming race since Sydney 2000, when Brooke Bennett and Diana Munz wrapped up the top prizes in the 400m freestyle.

“I'm so happy to go one-two with Erica," Ledecky added. "It is the first women's 1500m (freestyle in Olympic history) so I couldn’t have a better outcome than that. I’m so, so happy."

Sarah Kohler completed the podium to become the first German swimmer to win an Olympic medal since 2008.