Alan McLean established a new Stoney Creek course record Sunday with an eight- under 64 to tie for second with Derek Gillespie (69) and Alex Quiroz (68). The trio finished at 15-under-par 273.
Watney chipped in for birdie at the third hole and followed with another birdie at the fourth. He added a birdie at the 10th to put the tournament out of reach but rain hit and the tournament was delayed for 90 minutes.
When play resumed, Watney birdied the last two holes to cruise to his first victory on the Canadian Tour. Watney makes the second straight non-member to win on the Canadian Tour after amateur James Lepp won the Greater Vancouver Classic two weeks ago.
'I kept it in play and made some good putts,' said Watney, who will play on the PGA Tour this week in Reno, Nevada. 'I enjoyed playing with Derek, he has a lot of firepower. Playing in the final group with a lead and then shooting 67, I have to feel pretty good about that. You can't give these guys an inch out here.'
Robert Hamilton (67) and 2002 champion Chris Wisler (65) shared fifth place at 13-under-par 275. Ryan Dillon (67), Scott Hend (68) and Craig Matthew (68) tied for seventh place at minus-12.