TORONTO: Summer McIntosh set a world record in the 400m freestyle on the opening night of the Canadian swimming trials on Tuesday, the 16-year-old shaving 0.32 seconds off the mark set by Australia’s Ariarne Titmus last year. McIntosh finished in a time of 3:56.08 at the Toronto Pan Am Sports Centre to beat Titmus’s time of 3:56.40. “I’m not a crier but this world record, I didn’t think this was possible tonight,” McIntosh told CBC Sports. “It’s absolutely incredible. I’m not an emotional person. But I was hit with so much emotion. Pure euphoria right now. “Over the past few years I’ve put my life into this. To be the best I can be. To achieve something like this, it was very unexpected.” McIntosh’s head coach Brent Arckey said the Toronto native was “one of the best racers I’ve ever seen”. Earlier this month, McIntosh ended American Katie Ledecky’s nine-year home pool winning streak when she touched first in the 200m freestyle at a Pro Series swim meet in Fort Lauderdale, Florida.