Nine-time Olympic gold medallist Carl Lewis did not hold back in his criticism of the United States' performance in the men's 4x100 metres relay at Tokyo 2020.

Team USA have not won the event in 21 years and though they entered Thursday's heat as one of the favourites, they failed to qualify for the final.

It is the first time Team USA have failed to reach the Olympic final since 2008, though they have hardly had much fortune in the event since their success in Sydney.

Indeed, they have only once made it to the finish line cleanly, without any mistakes, when they claimed silver at London 2012. That medal, however, was conceded in the wake of Tyson Gay's doping ban.

This time around, a team including three of the fastest men in the world over 100m in 2021, fared little better.

Trayvon Bromell, Fred Kerley, Ronnie Baker and Cravon Gillespie finished sixth in the heat with a time of 38.10 seconds.

"We just didn't get the job done today," Kerley said. "That's all."

Sprinting great Lewis, who won two golds in the 4x100m relay, hit out at what he labelled a "clown show".

"The USA team did everything wrong in the men’s relay," Lewis wrote on Twitter. "The passing system is wrong, athletes running the wrong legs, and it was clear that there was no leadership. It was a total embarrassment, and completely unacceptable for a USA team to look worse than the AAU kids I saw."

He then expanded on his criticism in an interview with USA Today.

"This was a football coach taking a team to the Super Bowl and losing 99-0 because they were completely ill-prepared," Lewis said.

"It's unacceptable. It's so disheartening to see this because it’s people's lives. We're just playing games with people's lives. That's why I’m so upset. It's totally avoidable.

"America is sitting there rooting for the United States and then they have this clown show. I can't take it anymore. It's just unacceptable. It is not hard to do the relay."

HISTORY MADE BY SPAIN

Sport climbing and karate were two of the sports introduced for the Tokyo Games, and the first medals in each were won by Spanish athletes.

At the age of 39 years and 323 days, Sandra Sanchez became Spain's oldest Olympic champion as she triumphed in the women's kata, breaking the record set by Joan Llaneras in the velodrome in 2008.

Sanchez also became the first Spanish woman to clinch gold in martial arts since judoka Isabel Fernandez did so in 2000.

Her triumph was followed up by golds for France's Steven da Costa and Bulgaria's Ivet Goranova in the men's and women's kumite respectively.

At the opposite end of the spectrum to Sanchez, 18-year-old Alberto Gines Lopez became the youngest male Spanish athlete to strike gold at the Games as he pipped Nathaniel Coleman and Jakob Schubert in the sport climbing men's combined final.

"I think it will help the sport to grow, and for it to get more support. We need good installations in order to help the sport, and I think this will bring more support to the sport," the teenager said, before revealing his plans of celebration: "I'm going to break my diet. And then call my family and friends."

FOURNIER PREPPED FOR 'THE MOST COMPLICATED MATCH'

Team USA and France will meet in the final of the men's basketball competition, as the two favourites go head-to-head for gold.

Luka Doncic's shooting was off as Slovenia fell to an agonising 90-89 defeat to France, who beat the USA in the pool stage.

The European Champions, who also defeated the USA in the 2019 FIBA World Cup, now face a rematch against a side that has scored over 90 points in the last four games.

Evan Fournier, whose 23 points was second behind only team-mate Nando de Colo, knows what is in store.

"It represents a real step towards a dream, and the dream is to win the Olympics against the United States," said Fournier, who has just swapped the Boston Celtics for the New York Knicks.

"We have to rest and not let our minds wander, and prepare as much as possible, because there's a team waiting for us. They've prepared for us for two years, apparently, and because we beat them in the pool it will be worse, so it will be the most complicated match of the competition for us without any doubt."

SHOOT-OUT GLORY FOR BELGIUM

Beaten finalists in 2016, Belgium claimed their first hockey gold, and only their second in an Olympic team sport, after their men beat Australia 3-2 in a shoot-out.

Goalkeeper Vincent Vanasch was the hero in dramatic circumstances.

He made two saves before then denying Jacob Whetton, only for Belgium's celebrations to be cut short by a referral. However, Vanasch stood firm for a second time.

The shoot-out drama followed a 1-1 draw, with Tom Wickham having cancelled out Florent van Aubel's opener.

"What a feeling. You become Olympic champion, but twice [because of the referral] It's unusual," Vanasch said. "We had to calm down and go again. We knew that.

"I'm like a musician, it's a rehearsal and then you come to the concert and it comes naturally. That's how I come on the pitch. I'm composed, but also I trust myself, I trust my reflexes."

Australia have now won seven men's hockey medals across the last eight Games, while Belgium won their first gold in a team event since the 1920 Antwerp Olympics, when their men's football team triumphed.