The United States cut into China's lead in the medal table, leaving them just two ahead at the end of the penultimate day of the Tokyo Olympics.

China came into Saturday with a five-gold lead but double 4x400m relay success provided the platform for USA to make up ground.

Allyson Felix became the only American athlete to win 11 track medals as the women cruised to relay gold, while the men coasted to an 18th success as they finished well ahead, the Netherlands a distant second.

Team USA recorded their fourth successive gold in the men’s basketball final, plus there was success for Nelly Korda in the women's golf.

China picked up two golds to take their tally to 38, with Cao Yuan, who became the first athlete to win three different Olympic diving events, and Yang Jian securing a Chinese one-two in the 10m platform. Their other victory came in the women's canoe double 500m sprint.

Early leaders Japan collected a trio of triumphs, the first of which came in softball, while the Russian Olympic Committee also secured three golds, Abdulrashid Sadulaev dominating the men's heavyweight freestyle wrestling.

Galal Yafai captured Great Britain's 19th gold with a 4-1 points decision in the men's flyweight boxing final before Joe Choong added another by replicating Kate French's achievement in the men's version of the modern pentathlon.

Australia, who equalled their record medal haul at the Games on Thursday, remain in sixth place, Nicola McDermott's silver making history in the women's high jump with her country's first medal in the event since 1964.

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."

China failed to top the podium on day 12 at Tokyo 2020 but still hold a seven-gold buffer over the second-place United States in the medal table.

The leaders endured a rare quiet outing on Wednesday, with Rio silver medal pairing Huang Xuechen and Sun Wenyan providing the sole silver of the day for China in the artistic swimming.

The USA failed to significantly dent the eight-gold gap from Tuesday, collecting just one gold in the women's 400m hurdles, where Sydney McLaughlin obliterated her own world record as part of an American one-two with defending Olympic champion Dalilah Muhammad.

Muhammad's silver was one of three – all on the athletics track – for the USA as Courtney Frerichs and Kenny Bednarek boosted the medal count – the latter finishing second to North American rival Andre de Grasse in the men's 200m final.

Japan, who led the early gold count in Tokyo, remain in third and added golds through Yukako Kawai in the women's wrestling and Sakura Yosozumi in the women's skateboarding – Japan's third of four possible golds in the debuting event.

Great Britain leaped up from sixth to fourth as Hannah Mills and Eilidh McIntrye secured gold in the women's sailing and Ben Maher became Team GB's second successive showjumping champion, backing up Nick Skelton's win at the previous Olympics.

Australia are tied with Team GB on 15 golds after Mathew Belcher and Will Ryan sailed to victory in the men's 470 to go one better than their runners-up finish at Rio in 2016.

The Russian Olympic Committee make up the top six after Svetlana Kolesnichenko and Svetlana Romashina overcame China's Xuechen and Wenyan in the first of two artistic swimming events to win the Russians' 14th gold of the Games.

Meanwhile, Peruth Chemutai became the first Ugandan woman to win an Olympic medal as she claimed gold in the women's 3,000m steeplechase.

Canadian sprinter Andre De Grasse ended his long wait for an Olympic gold medal in the 200 metres final, while Italy smashed the world record in the men's team pursuit final on Wednesday.

De Grasse took silver behind the great Usain Bolt in this event five years ago, while he claimed a bronze in the 100m and 4x100m relay.

But there was no stopping the 26-year-old, who was also a bronze medallist in the 100m earlier this week. 

De Grasse registered a national record of 19.62 seconds; finishing 0.06s ahead of America's Kenny Bednarek, whose compatriot Noah Lyles completed the podium.

He also became the third Canadian champion of the men's 200m at the Olympic Games – and first since Percy Williams in 1928.

"I finally did it. I always felt like I came up short, winning bronze and silver, so it is good to have this gold medal," he said.

"No one can take that away from me. I lived for this moment. This is what dreams are made of. I did this for my kids.

"I am proud of this moment and I want everybody to know. I shocked the world and that is what I came to do. 

"Everyone was saying that the Americans were going to win, but this was my moment and I knew I had it in me.”

FORZA AZZURRI

Italy smashed the world record as they beat Denmark to glory in the men's team pursuit final.

Filippo Ganna – the reigning world time trial champion – produced the goods in the final 1,000m as the Italians edged their noses in front before crossing the line in 3:42.032 – almost eight seconds faster than Great Britain's winning time in Rio five years ago.

"We knew that we were fighting against a really good team, so we were off to a very good start and we were able to overtake," Ganna said.

"We knew that after 2.5 kilometres, we had people who were much stronger, so we wanted to attack them in the last kilometre. We thought that was where we would make the difference.

"I think we can really enjoy the moment now. It's really wonderful to have this medal around our necks and I want to thank all those who have encouraged us day after day to do better."

SWEET SIX FOR SVETLANA

Svetlana Romashina became the most decorated artistic swimmer in Olympic history after claiming her sixth gold medal in the women’s duet.

Alongside Svetlana Kolesnichenko, Romashina scored 98.800 after a wonderful routine in the final to land gold in this event for a third successive Olympic Games.

"I don't think about the sixth medal, I just think about our work which we have done," she said.

"We are very happy. I think we are happy of our work, of our team.

"I don't count the medals, I just want to feel this moment."

LASHA’S RELENTLESS STREAK CONTINUES

Georgia's Lasha Talakhadze resumed his domination of the super heavyweight division, lifting a total of 488kg on the way to glory in the men's +109kg event.

Talakhadze established three world records along the way in snatch, clean and jerk, and total, while finishing 47kg ahead of Iran's Ali Davoudi.

He has now won all 26 available gold medals in major international competitions since the 2016 Olympic Games.

"I feel quite well. I have just gained for a second time an Olympic gold medal and, of course, I have also set a new world record," Talakhadze said.

"When I was standing on the podium, hearing my country's national anthem, it was most exciting because we were for a long time looking forward to this Olympic Games and winning this gold."