Kaylee McKeown still rules the Olympic backstroke, beating Regan Smith in women’s 100-meter [Video]

Kaylee McKeown still rules the women’s Olympic backstroke.The Australian knocked off world-record holder Regan Smith of the United States in the 100 back on Tuesday night, defending the title she won at the Tokyo Games.Related video above: Canada’s Summer McIntosh wins her first Olympic goldSmith, who broke McKeown’s world mark with a time of 57.13 seconds at the U.S. trials last month, led at the turn but couldn’t hold off the hard-charging Aussie, who defended the title she won in Tokyo three years ago.”She is an absolutely incredible racer and she knows what to do when it matters,” Smith said. “But I’m really proud of myself.”McKeown surged to the front about halfway through the return lap and reached for the wall in 57.33, winning by a relatively comfortable margin over Smith’s finish of 57.66.”The nerves were definitely there but I just reminded myself it’s a pool in a different venue …