Dustin Johnson turned in a lackluster performance in the third round of the RBC Canadian Open on Saturday, shooting a one-under 71 at Glen Abbey Golf Club in Oakville, Ontario.
Johnson, the U.S. Open and WGC-Bridgestone Invitational winner, is tied for second with amateur Jared du Toit, and one stroke behind leader Brandt Snedeker. Johnson is looking for his third win in his last four starts.
Snedeker, the winner of the 2013 Canadian Open, started his round with birdies on holes two through six. He held the lead temporarily until the 11th hole, and then took it back by playing the final three holes in three under. He finished the round at six-under 66.
In four of Snedeker's eight PGA Tour wins, he has held at least a share of the lead going into the final round.
Steve Wheatcroft, vying for his first career PGA win, shot a round-best eight-under 64. He climbed 44 spots up the leader board into a tie for fourth with Alex Cejka at seven under.
The Canadian du Toit remains the low amateur. An eagle on 18 moved him to eight under and with a chance to become the first Canadian to win this tournament since Pat Fletcher in 1954.
World No. 1 Jason Day shot a three-under 69 on Saturday, working his way back up the leader board after making the cut by only two strokes. He is tied for 29th at two under.
[Click here for the entire leader board from Glen Abbey.] (http://www.golfdigest.com/story/pga-tour-leaderboard)