McKeown swam in lane three and got out slowly before putting on an incredible swim to hit the wall first. The Aussie phenom backed up her favouritism for the event in resounding fashion. Kaylee McKeown of Team Australia celebrates after winning the gold medal in the Women's 100m Backstroke Final on day four of the Tokyo 2020 Olympic Games at Tokyo Aquatics Centre on July 27, 2021 in Tokyo, Japan. (Photo by Tom Pennington/Getty Images) (Getty) McKeown set the event's world record at the Australian Olympic trials, clocking 57.45. She has now won Australia's third gold of the Games, after the women's 4x100m freestyle relay and Ariarne Titmus in the 400m freestyle.