Former world number one Rory McIlroy is among the leaders heading into the final round in Ontario.
Brandt Snedeker fired a 10-under 60 as Scott Brown and Matt Kuchar led the Canadian Open.
American golfer Adam Long earned a one-stroke victory following his final-round 65 on Sunday.
Phil Mickelson carded a six-under-par 66 to stay two strokes clear at the PGA Tour tournament on Saturday.
Phil Mickelson, who posted a career-low 60 in round one, carded a four-under-par 68 at the at the Nicklaus Tournament Course on Friday.
A back problem has led to Justin Rose's withdrawal from the WGC-Bridgestone Invitational.
Although Adam Hadwin claimed a maiden PGA Tour win on Sunday, Patrick Cantlay provided the most noteworthy story with a stunning display.