A female United States gymnast has tested positive for coronavirus while training in Tokyo ahead of the Olympics, the US Olympic Committee (USOC) has confirmed.

The unnamed athlete was an alternate – a team member included as a reserve – and will now isolate along with another team member who has been identified as a close contact.

"The health and safety of our athletes, coaches and staff is our top priority," a USOC statement read.

"We can confirm that an alternate on the women's artistic gymnastics team tested positive for COVID-19.

"Out of respect for the individual's privacy, we cannot provide more information at this time."

The positive test comes just four days before the delayed Games begins, with fellow US female gymnast Simone Biles set to be one of the stars of the competition.

The 24-year-old won four gold medals and a bronze at Rio 2016 and will be looking to add to that haul when the women's gymnastics competition starts on July 25.

It was also confirmed on Monday that Czech Republic beach volleyball player Ondrej Perusic tested positive for COVID-19.

Perusic and playing partner David Schweiner are due to begin their Tokyo 2020 campaign against Latvia on July 26, but the Czech Olympic Committee will seek to postpone the game until Perusic is cleared to play.

The number of Games-linked individuals to have tested positive for coronavirus since testing began on July 1 stood at 60 on Monday.

South Africa's men's football pair Thabiso Monyane and Kamohelo Mahlatsi were the first two athletes inside the Olympic Village to test positive over the weekend.

Around 11,000 athletes from 205 national Olympic committees are expected to stay at the village over the next three weeks.

The 2020 Games, delayed by a year due to the global health pandemic, will be held mostly without spectators due to a state of emergency being declared in Tokyo.

Infection rates in the Japanese capital have topped 1,000 for five days running, with a seven-day average of 1,068 as of Sunday.

The United States will head for Tokyo with back-to-back men's basketball wins after accounting for Spain 83-76 in their final exhibition game in Las Vegas prior to the Olympic Games.

Team USA have had a far-from-ideal Olympics preparation, defeated by Nigeria and Australia in exhibition games last week and losing Kevin Love to injury and Bradley Beal due to health and safety protocols.

Gregg Popovich's side bounced back by beating Argentina on Tuesday and finished off their Las Vegas camp against the Spanish on Sunday.

Damian Lillard top scored with 19 points with six assists for Team USA, while Kevin Durant had 14 points, two assists, two rebounds and two blocks.

Chicago Bulls guard Zach LaVine pulled off a series of dunks to put an exclamation mark on the performance.

Team USA are set to fly out for Tokyo on Monday, ahead of their Olympics opener against France on Sunday.

USA are grouped with France, Iran and the Czech Republic in men's basketball at the Tokyo Olympics where they are gold medal favourites.

In the women's USA defeated Nigeria 93-62 on Sunday to conclude their Olympic preparations, heading in as gold medal favourites too.

Cleveland Cavaliers forward Kevin Love has withdrawn from Team USA's roster for the Tokyo Olympics with two replacements confirmed.

Love joins Washington Wizards guard Bradley Beal, who has entered health and safety protocols, in dropping out of USA's original 12-man roster.

USA Basketball (USAB) announced on Friday that Denver Nuggets center JaVale McGee and San Antonio Spurs small forward Keldon Johnson have replaced the duo.

USAB said Love's withdrawal was due to "his ongoing injury recovery", having been returning from a right calf injury during the camp in Las Vegas where he did participate in exhibition games.

"I am incredibly disappointed to not be heading to Tokyo with Team USA," Love said in a statement released by Schwartz.

"But you need to be at absolute peak performance to compete at the Olympic level and I am just not there yet."

McGee averaged 7.3 points per game and 5.2 rebounds per game, shooting at 51.1 per cent from the field in the 2020-21 NBA season for the Nuggets.

Johnson, 21, averaged 12.8 points per game, 6.0 rebounds per game and 1.8 assists per game in the 2002-21 season for the Spurs.

Team USA are due to fly out for Tokyo on Monday, with their Olympics opener against France on July 25.

USA Basketball (USAB) has confirmed that Saturday's exhibition game between the United States and Australia has been cancelled due to growing COVID-19 fears.

The two sides were due to meet for the second time this week as part of their preparations for the upcoming Tokyo Olympics.

The cancellation comes after USAB confirmed on Thursday that two players had entered health and safety protocols.

Washington Wizards guard Bradley Beal had been ruled out of the Olympics after entering protocols, while Jerami Grant was also placed under protocols, as a precautionary measure.

Team USA are still scheduled to play Spain in Las Vegas on Sunday in their final preparation game before flying for Tokyo on Monday.

USA's opening game at the Tokyo Olympics is on July 25 against France, while Australia commence their Games campaign on the same day against Nigeria.

Australia had shocked USA 91-83 on Tuesday, following their upset defeat to Nigeria on Monday.

Washington Wizards guard Bradley Beal may be out of the Tokyo Olympics after entering the health and safety protocols at Team USA's camp in Las Vegas.

USA Basketball announced that a player had enter the protocols although they did not identify who, although he has widely been reported as Beal.

The Wizards guard played 30 minutes in Tuesday's 108-80 win over Argentina and was joint top scorer with 17 points, while he started both defeats to Australia and Nigeria.

“A member of the USA Basketball Men’s National Team has been placed under USA Basketball’s health and safety protocols,” the federation wrote in Wednesday's statement.

Beal could still be replaced in Team USA's final 12-member team for the Tokyo Olympics.

Team USA head coach Gregg Popovich is confident his side is getting better after responding to rare back-to-back losses with a 108-80 win over Argentina on Tuesday.

The gold medal favourite's preparations ahead of the Tokyo Olympics were shaken up after consecutive exhibition game defeats to Australia and Nigeria.

But the Americans were much improved 12 days out from their Olympics opener, led by Kevin Durant and Bradley Beal who both had 17 points and six rebounds.

USA led 58-42 at half-time and never looked back, as Bam Adebayo returned to the starting five with good impact.

“I thought we sustained it pretty well in our game against Australia, and we competed well, rebounded, played defense, ran the floor and had good pace for one half, but then it dissipated through the second half,” Popovich said.

“Tonight, I thought we maintained [effort] pretty much throughout the game, so hopefully that's a sign that we are in a little better condition.

"To play these games is huge for us. So, it was better, and it is getting better, bit by bit, every day.”

Popovich also praised Adebayo along with Draymond Green, while Jayson Tatum missed the game with a right knee injury with no timeframe confirmed.

"I thought both Bam and Draymond Green facilitated a lot of action, and they were very active," Popovich said. "They got everybody involved, which is something that's really important for us."

Beal added that the side had learned some important lessons from the Australia and Nigeria defeats.

"The biggest thing we have to realise is that it’s not the NBA, and coach Pop keeps re-emphasizing that to us every single day," Beal said.

"It’s more physical. These guys have been playing together for five, 10-plus years, so they have this experience and chemistry. We're trying to develop that in a short period of time."

USA have further games against Australia and Spain, before departing for Tokyo next Monday with the first Olympics game against France on July 25.

James Harden will not compete for the United States at the Olympic Games in Tokyo as he recovers from a hamstring injury, according to USA Basketball managing director Jerry Colangelo.

Harden reportedly committed to playing for Team USA at next month's Tokyo Games after the Brooklyn Nets lost to the Milwaukee Bucks in the second round of the NBA playoffs.

But Colangelo told ESPN on Wednesday that Harden – who endured an injury-hit 2020-21 campaign – has withdrawn, instead focusing on his recovery over the offseason.

A hamstring injury limited Harden to 36 regular-season games for the Nets following his blockbuster trade from the Houston Rockets, before he played nine times in the playoffs, scoring an underwhelming 20.2 points per game.

Harden went to London in 2012 after his final season as a bench scorer for the Oklahoma City Thunder but not to Brazil four years later having established himself in Houston.

Defending champions Team USA are yet to announce their roster for the Olympics, but Gregg Popovich's team is currently headlined by Nets superstar Kevin Durant, Golden State Warriors star Draymond Green, Damian Lillard of the Portland Trail Blazers, Washington Wizards All-Star Bradley Beal and the Boston Celtics' Jayson Tatum.

Team USA are scheduled to open their gold medal bid against France on July 25 amid the ongoing coronavirus pandemic.

"Life is about relationships, and we've got relationships with all these players over the years," Colangelo told ESPN. "It's been a process, and it hasn't been easy."

Colangelo added: "Versatility and athleticism are trademarks of this group.

"Our staff feels this will be a very competitive group and we'll have shooting that we've been lacking. We're going to go into camp feeling confident we're going to perform well."

James Harden has followed Brooklyn Nets team-mate Kevin Durant in committing to play for Team USA at the Tokyo Games, according to reports.

The United States team is taking shape as they prepare to defend their gold medal at the delayed 2021 Olympics.

Reports at the weekend detailed the expectation Durant would join the team after the Nets exited the NBA playoffs.

Durant was on the victorious USA teams in 2012 and 2016 and this year averaged 26.9 points per game in the regular season and 34.3 in the postseason – the 25th-best mark of all time.

The 2014 MVP will not be the only Brooklyn player on the Olympic team, according to The Athletic.

A hamstring injury limited Harden to 36 regular season games for the Nets following his trade from the Houston Rockets, before he played nine times in the playoffs, scoring an underwhelming 20.2 points per game.

Harden went to London in 2012 after his final season as a bench scorer for the Oklahoma City Thunder but not to Brazil four years later having established himself in Houston.

Golden State Warriors great Stephen Curry was involved on neither occasion – although he won the World Cup in 2010 and 2014 – and will not make his Olympic bow this year either, the report added.

Curry almost single-handedly carried the undermanned Warriors to the brink of the playoffs this year, taking the NBA scoring title with 32.0 points per game.

Donovan Mitchell, who struggled with an injury as the Utah Jazz lost to the Los Angeles Clippers, has also declined an invite, ESPN revealed.

Bam Adebayo, the Miami Heat center, will join the 12-man roster, though, aiming to bounce back from a playoff sweep at the hands of the Milwaukee Bucks in which he scored just nine points on four-of-15 shooting in Game 1.