<p>Australia's Kaylee McKeown set a new Olympic record to win the women's 100m backstroke gold medal Tuesday, upsetting arch-rival Regan Smith.</p>.<p>The 20-year-old touched in 57.47 seconds, fractionally outside her own world record, with Canada's Kylie Masse, the Rio bronze medallist, second in 57.72 and American Smith third in 58.05.</p>.<p>"My legs were definitely hurting in the last 20," said an ecstatic McKeown.</p>.<p><strong>Read more: <a href="https://www.deccanherald.com/sports/other-sports/tokyo-2020-biles-in-olympic-spotlight-bermuda-win-first-ever-gold-on-day-4-1013273.html" target="_blank">Tokyo 2020: Biles in Olympic spotlight; Bermuda win first-ever gold on Day 4</a></strong></p>.<p>"I'm sure it would have been pretty noticeable on the TV but I trained for that and I knew that I had a really strong back end and a really good chance to be on the podium."</p>.<p>Masse turned first at 50m with McKeown third, but the Australian powerfully brought it home.</p>.<p>McKeown had a tough lead-up to the Games, with her father dying last year from brain cancer.</p>.<p>But she used his memory as inspiration to swim a sensational race and smash Smith's world record at the Australian trials last month.</p>.<p>"It's not necessarily what I've been through," she said. "Everyone has a journey of their own and it just so happens that mine's been a really tough one.</p>.<p>"I wouldn't have it any other way because I don't think I'd be where I am today without all that happening."</p>.<p>She is also targeting the 200m backstroke gold, having recently set the fourth-quickest time in history.</p>
<p>Australia's Kaylee McKeown set a new Olympic record to win the women's 100m backstroke gold medal Tuesday, upsetting arch-rival Regan Smith.</p>.<p>The 20-year-old touched in 57.47 seconds, fractionally outside her own world record, with Canada's Kylie Masse, the Rio bronze medallist, second in 57.72 and American Smith third in 58.05.</p>.<p>"My legs were definitely hurting in the last 20," said an ecstatic McKeown.</p>.<p><strong>Read more: <a href="https://www.deccanherald.com/sports/other-sports/tokyo-2020-biles-in-olympic-spotlight-bermuda-win-first-ever-gold-on-day-4-1013273.html" target="_blank">Tokyo 2020: Biles in Olympic spotlight; Bermuda win first-ever gold on Day 4</a></strong></p>.<p>"I'm sure it would have been pretty noticeable on the TV but I trained for that and I knew that I had a really strong back end and a really good chance to be on the podium."</p>.<p>Masse turned first at 50m with McKeown third, but the Australian powerfully brought it home.</p>.<p>McKeown had a tough lead-up to the Games, with her father dying last year from brain cancer.</p>.<p>But she used his memory as inspiration to swim a sensational race and smash Smith's world record at the Australian trials last month.</p>.<p>"It's not necessarily what I've been through," she said. "Everyone has a journey of their own and it just so happens that mine's been a really tough one.</p>.<p>"I wouldn't have it any other way because I don't think I'd be where I am today without all that happening."</p>.<p>She is also targeting the 200m backstroke gold, having recently set the fourth-quickest time in history.</p>