Battle of the record breakers looms in the Tokyo pool

TOKYO - Tuesday's women's 100m backstroke final will be a battle of the record breakers with Australia's Kaylee McKeown going for gold against American Regan Smith and Canada's Kylie Masse.

The trio are the three fastest swimmers in the history of the event, all having held the world record, with McKeown the current owner. They showed their form in Sunday's heats with Masse setting an Olympic record before Smith took it from her and then McKeown went even faster.