Jhonattan Vegas birdied in a playoff with Charley Hoffman to capture his second straight RBC Canadian Open title.
The Venezuelan shot a 7-under 65 in the fourth round to finish the tournament at 21 under.
Hoffman, who entered yesterday atop the leaderboard with a one-stroke lead, had a 68 to force the playoff.
Jim Furyk was the last golfer to win back-to-back Canadian Opens. He did it at Hamilton Golf and Country Club in 2006 and then at Angus Glen Golf Club in Markham.
Ian Poulter (64) came in third at 20 under while Gary Woodland (68) was 19 under.
Mackenzie Hughes (68) of Dundas was the top Canadian at 10 under and in a tie for 32nd. Graham DeLaet of Weyburn, Saskatchewan fired a 71 to finish 8 under.