Caeleb Dressel stormed a world-record time in the men's 100 metres butterfly to win a third gold of Tokyo 2020, while Katie Ledecky earned a measure of revenge on Ariarne Titmus in Saturday's action at the Tokyo Aquatics Centre.

It has been some week for Dressel, though he later missed out on a fourth gold in the mixed 4x100m medley final.

There was more success for Kaylee McKeown and Australia in the 200m backstroke, while Adam Peaty was a gold medal winner again.

THREE UP AND A WR AS DRESSEL WINS THRILLER

He had to do it the hard way but Dressel scooped a third gold of the games and broke his own world record in the men's 100m butterfly after a thriller with Kristof Milak.

Dressel exploded off the block and had a healthy lead but Milak roared back down the home 50m to give his rival a scare.

But the American found an extra gear in the final few strokes to post a 49.45. He now has seven of the best 100m butterfly times in history, while five of the sub-50 second times in the event have come in 2021.

LEDECKY TREBLES UP, SCORES TITMUS REVENGE

Ledecky's prowess in the 800m free came to the fore again as she exacted revenge on Australian rival Ariarne Titmus.

American great Ledecky was pipped by Titmus – who also took out the 200m – in an astonishing 400m race earlier this week.

But for the third straight Games Ledecky is the 800m champion, stealing a march in the opening 50m and, though Titmus stayed close throughout, came home in 8:12.79 - the 17th-fastest swim of all-time.

Ledecky is just the third woman after Australian Dawn Fraser (100 free, 1956-64) and Hungarian Krisztina Egerszegi (200 back, 1988-96) to win three consecutive golds in the same swimming event.

MCKEOWN DOUBLES UP

Kaylee McKeown made it a backstroke double by taking out the women's 200m race having won the 100m earlier in the meet.

The Australian had to do things the hard way to reel back in Canada's Kylie Masse who was eight tenths clear of McKeown after 100m.

But McKeown charged down the final stretch doing the final 50m in 31.08 to touch home in 2:04.68, becoming the first Australian woman to gold medal in the event.

PEATY STRIKES GOLD AGAIN AS GB ROMP TO MEDLEY GLORY

Earlier this week, Adam Peaty defended his title in the men's 100m breaststroke in convincing style and he won his second gold of the Games as Great Britain smashed the world word in the in the 4x100 mixed medley.

Peaty, now a three-time Olympic gold medallist, swam an astonishing 56.78 leg, as he, Kathleen Dawson, James Guy and Anna Hopkin topped the podium.

Dressel was part of a Team USA quartet who were fifth.