U.S. team captain Fred Couples holds the Presidents Cup during a team picture after the U.S. defeated the International team in the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 6, 2013. Front row L- R: Jason Dufner, Matt Kuchar, Keegan Bradley, Fred Couples, Bill Haas, Jay Haas, Davis Love III. Top row L- R Steve Stricker, Tiger Woods, Zach Johnson, Webb Simpson, Brandt Snedeker, Phil Mickelson, Jordan Spieth, Hunter Mahan. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Tiger Wood's girlfriend Lindsey Vonn gives a high five to U.S. team member Hunter Mahan during the Singles matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 6, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF ENTERTAINMENT)

Jay Haas (R), assistant captain of the U.S. squad, speaks with team member Hunter Mahan during the four ball matches at the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 5, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. (L) shakes hands with International team captain Nick Price of Zimbabwe after he and Brandon Snedeker defeated International team players Louis Oosthuizen and Charl Schwartzel, both of South Africa, in their four ball match at the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 5, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

International teammates Ernie Els (L) of South Africa and Brendon de Jong of Zimbabwe celebrate after defeating the U.S. team of Bill Haas and Hunter Mahan on the 15th hole during the Foursome matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 4, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

International team member Ernie Els of South Africa (L) shakes hands with U.S. team member Hunter Mahan after Els and teammate Brendon de Jonge of Zimbabwe defeated the U.S. team of Mahan and Bill Haas on the 15th hole during the Foursome matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 4, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

International teammates Jason Day (C) of Australia celebrates with Graham DeLaet of Canada (R) after Day won their match with a putt on the eighteenth hole against the U.S. team of Hunter Mahan and Brandt Snedeker during the opening Four-ball matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 3, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

International teammates Jason Day (C) of Australia celebrates with Graham DeLaet of Canada (R) after Day won their match with a putt on the eighteenth hole against the U.S. team of Hunter Mahan and Brandt Snedeker during the opening Four-ball matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 3, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

U.S. player Hunter Mahan celebrates his putt on the 2nd hole against International team members Jason Day and Graham DeLaet during the opening Four-ball matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 3, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

U.S. teammates Hunter Mahan (L) and Brandt Snedeker celebrate winning the second hold against International team members Jason Day and Graham DeLaet during the opening Four-ball matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 3, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

International team members Jason Day (L) of Australia confers with teammate Graham DeLaet of Canada on the first green as they play the U.S. team of Hunter Mahan and Brandt Snedeker during the opening Four-ball matches for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 3, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF)

(L to R) U.S. golfers Hunter Mahan and Brandt Snedeker, playing in the first match against Jason Day and Graham DeLaet of the International team, are introduced during opening ceremonies for the 2013 Presidents Cup golf tournament in Columbus, Ohio October 2, 2013. REUTERS/Chris Keane (UNITED STATES - Tags: SPORT GOLF) 

U.S. Team player Hunter Mahan signs autographs for fans during the second practice round for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 2, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

U.S. Team player Hunter Mahan tees off during the second practice round for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 2, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

U.S. Team player Hunter Mahan tees off during the second practice round for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 2, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

U.S. team members pose for a group photo ahead of the second practice round for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 2, 2013. Back row, from L: Jay Haas, captain's assistant; Jason Dufner; Bill Haas; Webb Simpson; Fred Couples, captain; Jordan Spieth; Keegan Bradley; Brandt Snedeker; Davis Love III, captain's assistant. Front row, from L: Zach Johnson; Matt Kuchar; Phil Mickelson; Tiger Woods; Steve Stricker; Hunter Mahan. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

U.S. team members pose for a group photo ahead of the second practice round for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 2, 2013. From L: Jay Haas, captain's assistant; Keegan Bradley; Jason Dufner; Bill Haas; Zach Johnson; Matt Kuchar; Hunter Mahan; Phil Mickelson; Fred Couples, captain; Webb Simpson; Brandt Snedeker; Jordan Spieth; Steve Stricker; Tiger Woods and Davis Love III, captain's assistant. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

U.S. team members pose for a picture prior to their first practice round for the 2013 Presidents Cup golf tournament at Muirfield Village Golf Club in Dublin, Ohio October 1, 2013. From left to right: - Jay Haas, captain's assistant; Keegan Bradley; Jason Dufner; Bill Haas; Matt Kuchar; Hunter Mahan; Fred Couples, captain; Phil Mickelson; Webb Simpson; Brandt Snedeker; Jordan Spieth; Steve Stricker; Tiger Woods and Davis Love III, captain's assistant. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts after his shot on the ninth tee during the first round of the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 8, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the 11th hole during the first round of the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 8, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the 10th hole during the first round of the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 8, 2013. REUTERS/Jeff Haynes (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the ninth hole during a practice round for the 2013 PGA Championship golf tournament at Oak Hill Country club in Rochester, New York August 7, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Tiger Woods (L) and Hunter Mahan, both of the U.S., share a laugh on the ninth green during a practice round for the 2013 PGA Championship golf tournament at Oak Hill Country club in Rochester, New York August 7, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the first hole during a practice round for the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 7, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. watches his shot on the second tee during a practice round for the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 7, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Tiger Woods' golf bag stands on the fifth green as Woods (L) and Hunter Mahan, both of the U.S., walk past during a practice round for the 2013 PGA Championship golf tournament at Oak Hill Country Club in Rochester, New York August 7, 2013. REUTERS/Mathieu Belanger (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. lines up a putt on the eighteenth green at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. greets fans as he walks off the eighteenth green at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. greets fans as he walks off the eighteenth green at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. waves to crowd after putting out on the eighteenth hole at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. tees off on the seventeenth hole at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. tees off on the seventeenth hole at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. waits to tee off on the seventeenth hole at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 26, 2013. REUTERS/Fred Thornhill (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. hits from the bunker on the ninth hole during the first round at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 25, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. hits out of the bunker during the first round at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 25, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. hits his approach on the 11th fairway during the first round at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, Ontario July 25, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. hits his approach on the 11th fairway during the first round at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, Ontario July 25, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. smiles on the eleventh tee during the pro-am at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 24, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. tees off on the eleventh hole during the pro-am at the Canadian Open golf tournament at the Glen Abbey Golf Club in Oakville, July 24, 2013. REUTERS/Mark Blinch (CANADA - Tags: SPORT GOLF) 

Hunter Mahan of the U.S. flips his club after missing his putt on the 12th green during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. watches his tee shot on the 18th green during the third round of the British Open golf Championship at Muirfield in Scotland July 20, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. walks off the 18th green after finishing his third round of the British Open golf Championship at Muirfield Scotland July 20, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. acknowledges the crowd after his par putt on the 18th green during the third round of the British Open golf Championship at Muirfield Scotland July 20, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. acknowledges the crowd after his par putt on the 18th green during the third round of the British Open golf Championship at Muirfield Scotland July 20, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. hits out of a bunker on the 18th hole during the third round of the British Open golf Championship at Muirfield in Scotland July 20, 2013. REUTERS/Toby Melville (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. watches his tee shot on the sixth hole during the third round of the British Open golf championship at Muirfield in Scotland July 20, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. lines up his putt on the fifth green during the third round of the British Open golf championship at Muirfield in Scotland July 20, 2013. REUTERS/Russell Cheyne (BRITAIN - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts to his missed birdie putt on the sixth green during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts after his par on the fifth hole during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. looks at his shot on the fifth tee during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. makes his third shot on the fourth hole during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts after his par on the second hole during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. watches his shot from the second tee during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the second hole during the final round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 16, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts after putting on the 18th green during the third round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 15, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the 18th hole during the third round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 15, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts after his par on the 16th green during the third round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 15, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. reacts after his birdie on the 12th green during the third round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 15, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. picks up his ball from the cup after his birdie on the 12th green during the third round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 15, 2013. REUTERS/Matt Sullivan (UNITED STATES - Tags: SPORT GOLF)

Hunter Mahan of the U.S. tees off on the second hole during the third round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 15, 2013. REUTERS/Adam Hunger (UNITED STATES - Tags: SPORT GOLF)