2015 Shell Houston Open

Justin Rose of England hits his second shot on the fifteenth hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Jordan Spieth hits his second shot on the fifteenth hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Ryo Ishikawa of Japan lines up a putt on the tenth hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Phil Mickelson reacts to a shot on the thirteenth hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Paul Casey of England takes a penalty drop on the eighth hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Patrick Reed hits his tee shot on the second hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Victor Dubuisson of France hits a tee shot on the second hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Phil Mickelson birdies the second hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Hunter Mahan hits his tee shot on the thirteenth hole during the first round of the Shell Houston Open at the Golf Club of Houston on April 2, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Martin Kaymer of Germany hits a shot from a fairway bunker on the thirteenth hole during the scond round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Chris Stroud hits his tee shot on the fifteenth hole during the scond round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Sergio Garcia of Spain hits his tee shot on the fifteenth hole during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Padraig Harrington of Ireland hits his tee shot on the fifteenth hole during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Matt Kuchar hits his tee shot on the thirteenth hole during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Rickie Fowler watches his tee shot on the thirteenth hole during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

J.J. Henry hits from a green side bunker on the eighth hole during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Jamie Donaldson of Wales pulls a club from his bag on the twelfth tee during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Ryan Moore loses his club on the thirteenth hole during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Martin Kaymer of Germany hits an approach shot from the third fairway during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Lee Westwood of England lines up a putt on the twelfth green during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Shawn Stefani lines up a putt on the seventh green during the second round of the Shell Houston Open at the Golf Club of Houston on April 3, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

HUMBLE, TX - APRIL 04: Patrick Reed hits his tee shot on the thirteenth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

HUMBLE, TX - APRIL 04: Rickie Fowler hits his tee shot on the sixth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

HUMBLE, TX - APRIL 04: Erik Compton hits his tee shot on the thirteenth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

HUMBLE, TX - APRIL 04: Matt Kuchar hits his second shot on the tenth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

HUMBLE, TX - APRIL 04: Padraig Harrington of Ireland hits his tee shot on the thirteenth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

HUMBLE, TX - APRIL 04: Patrick Reed and his caddie Kessler Karain walk to the thirteenth tee during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

HUMBLE, TX - APRIL 04: Johnson Wagner watches his tee shot on the fifteenth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

HUMBLE, TX - APRIL 04: Jordan Spieth speaks with his caddie on the sixth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

HUMBLE, TX - APRIL 04: Phil Mickelson hits a shot right handed on the twelfth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

HUMBLE, TX - APRIL 04: Austin Cook hits his tee shot on the thirteenth hole during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

HUMBLE, TX - APRIL 04: Phil Mickelson hits an approach shot during the third round of the Shell Houston Open at the Golf Club of Houston on April 4, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

J.B. Holmes waves to the crowd following an eight-under par 64 in the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

J.B. Holmes embraces his caddie following an eight-under par 64 in the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Jordan Speith lines up a putt on the eighth green during the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Johnson Wagner reacts to birdie on the eighteenth green during the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Johnson Wagner reacts to birdie on the eighteenth green during the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Stacy Revere/Getty Images)

Jordan Speith chips to the eighteenth green during the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

J.B. Holmes congratulates his caddie after winning the Shell Houston Open at the Golf Club of Houston on the second hole of a playoff on April 5, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

Jordan Speith speaks with his caddie Michael Greller on the sixteenth tee during the final round of the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)

J. B. Holmes poses with the trophy after winning the Shell Houston Open at the Golf Club of Houston on April 5, 2015 in Humble, Texas. (Photo by Scott Halleran/Getty Images)