PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Tom Hoge (USA) hits an iron during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: K.J. Choi (KOR) tees off during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Ernie Els (RSA) hits an iron shot during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Graeme McDowell (NIR) hits an iron during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Whee Kim (KOR) takes advice from his caddy during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Mike Weir (CAN) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Mike Weir (CAN) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Cameron Percy (AUS) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Cameron Percy (AUS) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Camilo Villegas (COL) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Shawn Stefani (USA) watches his iron shot during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Chad Collins (USA) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Carl Pettersson (SWE) hits an iron on the eighteenth fairway during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Tyrone Van Aswegen (RSA) hits from a fairway bunker on the eighteenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Tyrone Van Aswegen (RSA) walks up the fairway of the eighteenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: K.J. Choi (KOR) hits out of the fairway bunker on the eighteenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Ernie Els (RSA) hits out of a fairway bunker on the eighteenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Matt Kuchar (USA) hits an approach shot on the eighteenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Matt Kuchar (USA) walks up the fairway on the eighteenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Mike Weir (CAN) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Jhonattan Vegas (VEN) during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Dustin Johnson (USA) is amused during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Dustin Johnson (USA) surveys the green during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: David Hearn (CAN) blasts out of the sand trap during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Patrick Cantlay during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Adam Hadwin (CAN) tees off at the tenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Dustin Johnson (USA) tees off at the tenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Jim Furyk (USA) tees off at the tenth hole during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: C.T. Pan pitches out of the bunker during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Gonzalo Fdez-Castano reacts during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Gonzalo Fdez-Castano reacts during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: C.T. Pan tees off at the tenth hole of the bunker during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Kevin Tway (USA) tees off during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Jason Kokrak tees off during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Ben Martin (USA) surveys the green during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Danny Lee (NZL) examines the green during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Danny Lee (NZL) on the seventh green during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Pond at the eighteenth hole of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM

PGA 2017: RBC Canadian Open JUL 27

July 27, 2017: Vijay Singh (FIJ) marks his ball at the eighteenth green during the opening round action of the RBC Canadian Open at Glen Abbey Golf Club in Oakville, Ontario, Canada. Daniel Lea/CSM