Briton Adam Peaty beat his own world record in the men's 100m breaststroke, with a time of 57.55 seconds. Video will play in Play now Don't auto playNever auto playThree swimming world records have been broken on the first day of competition in Rio. And Australia's 4x100m women's freestyle relay team of Emma McKeon, Brittany Elmslie, Bronte Campbell and sister Cate Campbell defended their country's title in the event, clocking a time of three minutes 30.65 seconds. After repeated frustration on sport's biggest stage, Hungarian Katinka Hosszu crushed the women's 400m individual medley record to make her first Olympic medal gold. She had led all the way and touched in 4:26.36, easily eclipsing the record of 4:28.43 held by China's Ye Shiwen.

Source: New Zealand Herald August 07, 2016 03:56 UTC