Tatjana Schoenmaker smashed the world record to win gold in the women's 200m breaststroke, while Emma McKeon and Evgeny Rylov were top of the podium in Friday's action in the pool.
There was also glory for Wang Shun in a closely fought men's 200m individual medley at the Tokyo Aquatics Centre.
Here's a round-up of the best action from another action-packed session at Tokyo 2020.
SIZZLING SCHOENMAKER TAKES OUT WR
Schoenmaker lived up to her billing as the favourite in the women's 200m breaststroke, winning South Africa's first gold medal of the Games in sensational style.
The 24-year-old, who took silver in the 100m, shattered the world record in a time of 2:18.95 with Lilly King of the United States in second.
After touching the wall, Schoenmaker screamed in delight at seeing her time before sobbing in the pool as the emotion of her achievement hit home.
The face after you realise you've broken the WORLD RECORD!— Olympics (@Olympics) July 30, 2021
Tatjana Schoenmaker is your new world record holder in the women's 200m breaststroke. #RSA@fina1908 @TeamSA2020 #Swimming #Tokyo2020 pic.twitter.com/8gQUd8wEpo
OLYMPIC BESTS FROM MCKEON AND RYLOV
McKeon won Australia's ninth gold medal of the Games and sixth of a memorable week in the pool for the nation by dominating the women's 100m freestyle.
The 27-year-old led from start to finish and stormed home in a time of 51.96, a new Olympic benchmark. Team-mate Cate Campbell was third behind Siobhan Haughey of Hong Kong.
"Honestly, my emotions are a bit all over the place right now," McKeon told Channel 7. "I know all of my family back home are watching and I felt them with me in my race.
"I know all the support they've given me over all the years of me swimming. They're part of it all."
Another Olympic record was broken in a men's 200m backstroke event won by Rylov, who doubled up with the gold he won in the 100m race for the Russian Olympic Committee.
Having won that shorter race, Rylov was fancied as somewhat of a shoo-in over his favoured four-lap distance and so it proved as he set a time of 1:53.27.
SCOTT PIPPED AGAIN AS WANG HOLDS FIRM
Duncan Scott brought home gold as part of TeamGB's 4x200m freestyle relay team – but he was just edged in the 200m individual free by team-mate Tom Dean and was beaten in the 200m individual medley by a narrow margin too.
This time it was China's Wang Shun who came out on top, the Rio 2016 bronze medallist produced a fine performance to win in a time of 1:55.00, just 0.28 seconds faster than Scott.