CAPTION: Dustin Johnson shot a 6-under 66 to win the RBC Canadian Open for the first time on Sunday.

The American golfer says his connection to Wayne Gretzky helps with fan support. (July 30, 2018) 1.

SOUNDBITE: Dustin Johnson, golfer 2.

SOUNDBITE: Mackenzie Hughes, golfer PLACELINE: Oakville, Ontario CREDIT: The Canadian Press STORYLINE: Dustin Johnson pulled away from the field after a nearly two-hour rain delay to win the RBC Canadian Open for the first time.

Johnson shot a 6-under 66 to finish the only Canadian stop on the PGA Tour at 23-under par.

The world No. 1 tied for second in the Canadian Open at Glen Abbey Golf Course in 2013 and 2016.

Byeong Hun An (69) and Whee Kim (69) finished as runners up at 20-under in the US$6.2 million event, with Keegan Bradley (64) placing fourth at 19-under.

Mackenzie Hughes (68) of nearby Dundas, Ont., was the low Canadian, tying for eighth at 15 under overall.