Australia's Kaylee McKeown smashes women's 100m backstroke world record

The 19-year-old swept past American rival Regan Smith's all-time mark of 57.57, set at the 2019 world championships.

Kaylee Mckeown of Australia in action.   -  Getty Images

Teenager Kaylee McKeown smashed the women's 100m backstroke world record on Sunday, touching in 57.45sec at the Australian Olympic trials in Adelaide.

The 19-year-old, who has been in blistering form this year, swam a scorching race to sweep past American rival Regan Smith's all-time mark of 57.57, set at the 2019 world championships.

McKeown turned in 28.10 and was never under threat as she powered to the finish.

Veteran Emily Seebohm hit the wall second in 58.59 to also book her place in Tokyo in what will be her fourth Olympics.

RELATED| Tokyo Olympics: Reigning 400m champion Mack Horton misses Australia team

"I just can't believe it. I just wanted to come in tonight and blow out the cobwebs," McKeown said poolside in Adelaide with tears in her eyes.

"It's been a huge year for me and my family. It's been 10 months since my dad passed today. So with that behind me and doing that I think he would be very proud."

McKeown, whose father died last year from brain cancer, is shaping up to be a serious multiple gold medal contender in Japan.

RELATED| Lochte, chastened by misdeeds, takes aim at fifth Olympics

She is also expected to qualify in the 200m backstroke, having recently set the fourth quickest time in history, and the 200m individual medley, where she owns the world's best time this season.

Australia won 10 medals in the pool at the 2016 Games in Rio, matching its feat from London four years earlier, but well down on the 20, it clinched in Beijing in 2008.

For more updates, follow Sportstar on :