Great Britain added to their medal haul on Wednesday with showjumper Ben Maher winning gold as well as sailing duo Hannah Mills and Eilidh McIntyre.
Elsewhere, 13-year-old skateboarder Sky Brown became Team GB's youngest Olympic medallist of all time while boxers Ben Whittaker and Frazer Clarke picked up silver and bronze medals respectively.
Britain's Brown, 13, was the favourite to win the women's event but she stumbled in her first two runs before her final display of 540 spins and flip indies saw her vault onto the podium from fourth.
"I'm so stoked. I can't believe it, it's unbelievable. I'm so happy to be on the podium with these guys, it's insane," Brown said in a statement.
"The medal feels unreal, it's like a dream. I can't wait to show the medal to my family and friends."
Mills and McIntyre won the first gold of the day in the women's 470 sailing event, despite finishing fifth in the medal race.
Their previous performances were enough to keep them in the gold-medal position with Poland taking silver and France claiming bronze.
The win makes Mills the most decorated Olympic sailor ever. She also won gold in the 470 in Rio and silver in London.
McIntyre's father, Mike, won gold in the Star class at the 1988 Olympics in Seoul, South Korea.
"To my dad, thank you for everything," McIntrye said. "Thank you for being my inspiration, for being at the end of the phone whenever I wanted to talk.
"I want to thank my whole family and my poor mum. She's had to live through the stress of this twice!"
Great Britain have now won five sailing medals at Tokyo 2020, including three golds.
Team GB's second gold of the day came in the men's individual showjumping with Maher winning the jump-off on Explosion W.
The result means Team GB have now won back-to-back titles in the event after Nick Skelton won gold in Rio five years ago.
"My fiancee [Sophie], we are getting married in two weeks' time," Maher said. "I don't know what was more pressure, this or getting married in two weeks but there are so many people who have contributed to make this possible and hopefully we will get home and have a big celebration."
The other British riders did not make it to the jump-off.
Harry Charles was forced to retire after a series of penalties while Scott Brash completed the course with no penalties but took too much time to get around the course.
Riders are allotted 88 secs to complete the course and Brash took 88.45 secs.
Medal hopeful Katarina Johnson-Thompson pulled out of the heptathlon after she picked up an injury in the 200 metre event.
Johnson-Thompson did eventually get back to her feet and complete the race but was disqualified for leaving her lane.
British Athletics later confirmed the 28-year-old had officially withdrawn from the event, but clarified that the injury was to her right calf and not a reoccurrence of the Achilles problem she sustained over the winter.
In boxing, Whittaker took silver in the men's light-heavyweight category after losing on points in the final to Cuba's Arlen Lopez.
Whittaker was the underdog for the final, and lost out on a split decision to Lopez, who was a gold medal-winner from Rio in the middleweight category.
Whittaker boxed valiantly, but Lopez was the more aggressive across the first two rounds. Despite Whittaker trying to land a series of big shots on Lopez in the final round, the Cuban did enough to come through to take it 4-1 on the scorecard.
It has still been Great Britain's most successful Olympics in the sport since 1920, with six guaranteed medals having already overtaken the five they won at London 2012, and three from Rio 2016.
"I truly woke up this morning believing it's my time," Whittaker told reporters after he refused to put on his silver medal at the podium.
"It just felt like a failure, so I just couldn't celebrate the silver at that time and I don't think I can just yet."
In the men's super-heavyweight competition, Clarke won a bronze medal but only after his semifinal bout against Bakhodir Jalolov was stopped due to a cut over the British man's eye.
Jalolov had taken the first two rounds -- the first unanimously and the second in a 4-1 split -- before the fight was stopped in the third.
"It's not the fairytale I wanted, I'm proud of myself though. In the last six months I've made more sacrifices than in the rest of my career in boxing. I'm Olympic bronze medallist, never could I have imagined that. I'll be able to sleep at night," Clarke said after the fight.
Alice Dearing made history on Wednesday by becoming the first female Black swimmer to represent Great Britain at an Olympic Games.
However, it was a tough day for Dearing who said she was "devastated" at coming 19th in the women's 10 kilometre marathon swimming event.
She dropped to 20th out of 25 swimmers early in the race and couldn't rejoin the leading pack.
"I'm pretty broken. It was really hard, a really tough race. I had a lot more to give than that, I'm better than that," she said.
"It's bittersweet. It's incredible to race at the Olympics but I'm really disappointed with the result. I know I can do better. I want to go to Paris and have a better race and perform better than this."
A British record was set by Lizzie Bird in the women's 3,000 metre steeplechase final.
Bird finished in ninth position but her time of 9.19.68 minutes was still enough to give her a national record.
Great Britain's women's hockey team failed to defend their Olympic title after losing 5-1 to world champions Netherlands in their semifinal.
Netherlands beat the Rio 2016 champions easily with the match going to 4-0 before Giselle Ansley managed to pull one back through a penalty corner.
Jodie Williams clocked a personal best in the women's 400m semifinal to qualify automatically for the final on Friday.
Williams completed the race in 49.97 seconds and said she wants to add to her Commonwealth and European silver medal haul in the final.
"I saw the first semi and though 'Girl, you'd better run 49 right now,'" she said.
"I came here to medal. I came here to win. At this stage in my career I've learned my lesson. It's taken me some time to get here... I want to do myself proud."
Nick Miller said he was "disappointed" after finishing sixth in the men's hammer final.
He made a big improvement in his sixth thrown -- recording a season's best 78.15m -- but it wasn't enough to take him up the table.
"I'm kind of disappointed. I couldn't quite find the rhythm. Sixth place -- it is what it is," he said after.
"I was in good shape but it just didn't happen today. We figured few things out this year, my training's good. Next year try and stay healthy all the way."