Kylie Masse capped a memorable Sunday for Canada’s swim team.

The two-time world champion set an Olympic record in the women’s 100-metre backstroke, winning in 58.17 seconds, only to see American rival Regan Smith (57.96) and Australia’s Kaylee McKeown (57.88) lower the mark in consecutive heat races at the Tokyo Aquatics Centre.

McKeown, Smith and Masse, from LaSalle, Ont., qualified 1-2-3 for the semifinals on Sunday night.

Taylor Ruck of Kelowna, B.C., started slow but finished third in her heat to qualify 11th of 16 swimmers.

WATCH | Masse, Ruck secure spots in backstroke semifinals:

Kyle Masse wins her heat and sets a brief