Tokyo Olympics Day 3 updates: Swimming star's wild R-rated celebration

British swimmer Adam Peaty could hardly control his emotions after clinching gold in the men's 100m breaststroke on Monday.

It was raining medals for Australia in the pool on Monday, as Kyle Chalmers pulled off a freakish performance to rescue our men's team in the 4x100m freestyle relay final.

Australia were sixth when the 100m freestyle gold medallist dived in for the final leg. However, in one of the great relay swims, Chalmers, swimming in the anchor leg, clocked the fifth fastest relay split in history to get Australia to the bronze medal.

It was the fastest leg by any of the 32 men in the race.

Aussie star Ariarne Titmus has taken gold after beating American legend Katie Ledecky in the 400m freestyle and in a historic victory.

It looked as if Ledecky was going to take the gold for the majority of the race, but Titmus dug in deep and overtook her with a monumental sprint finish.

Her coach Dean Boxall went completely ballistic when seeing his swimmer pull it off, and the performance has been described as "just phenomenal" by Aussie swimming legend Ian Thorpe. 

There was also some drama in the women's 100m backstroke semi-finals, with Dutch swimmer Kira Toussaint accused of an "illegal" move.

Later, British swimmer Adam Peaty could hardly control his emotions after clinching gold in the men's 100m breaststroke on Monday.