Groups we're watching: RBC Canadian Open, Round 4

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FOLLOW THEM LIVE: Follow any group on the course

All times are eastern.

Chez Reavie, Anthony Kim
Tee time: 1:45 p.m.
Tee: No. 1
Total TOUR wins: 2
Why you should watch: Reavie shot a fine 68 in Saturday's third round, but the rookie made three costly bogeys on the back nine that helped place Kim (64) only one shot back. Kim has already shown in his young career that the fourth round is his signal to go low. Reavie, playing in the final group for the first time in his career, is giving up 20-30 yards off the tee and will have to take advantage of Glen Abbey's shorter par-3s and par-4s.

Scott McCarron, Steve Marino
Tee time: 1:35 p.m.
Tee: No. 1
Total TOUR wins: 3
Why you should watch: McCarron, who has made the cut in just five events this year, had one of the best rounds on the 2008 PGA TOUR in the third round. The three-time winner on TOUR was two-over after just four holes, but then things got crazy in a hurry. McCarron caught absolute fire, reeling off 10 birdies in only 14 holes to shoot a tournament-best 63. The round earned him a date with Steve Marino, who has already shown that he has the game to win on TOUR. The pair start the final round four shots back.

Sean O'Hair, Mike Weir
Tee time: 1:15 p.m.
Tee: No. 1
Total TOUR wins: 10
Why you should watch: We've all heard all week that Weir treats this tournament as his fifth major, and he's done nothing to send him down the leaderboard. The Canadian has played consistent golf all week, and he's played Glen Abbey's back nine particularly well. He will be playing with Sean O'Hair, one of the biggest wild cards in the field. If O'Hair's putter gets hot, watch out; he leads the field in birdies this week, with 19 in only 54 holes. A win by O'Hair would push him over the 10,000-point total in the FedExCup standings and a likely spot in the top 10.

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