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Phil Mickelson of the United States celebrates after his final putt on the 18th green with his caddie Jim Mackay during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Jon Super) ( British Open Golf )

Tiger Woods of the United States reacts after playing a shot on the 11th hole during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Matt Dunham) ( APTOPIX British Open Golf )

England's Ian Poulter chips onto the 16th green during the fourth and final round of the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013. GLYN KIRK/AFP/Getty Images ( 521522796 )

Adam Scott of Australia holds up his ball after putting on the 11th green during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Scott Heppell) ( British Open Golf )

Lee Westwood of England plays out of a bunker on the 9th hole during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Peter Morrison) ( APTOPIX British Open Golf )

Tiger Woods of the United States drives off the third tee during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Matt Dunham) ( British Open Golf )

Ian Poulter of England reacts after hitting his second shot on the 3rd hole during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Andrew Redington/Getty Images) ( 174161033 )

Shingo Katayama of Japan plays a shot off the third tee during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Scott Heppell) ( British Open Golf )

Dustin Johnson of the United States hits out of the bunker on the 4th hole during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Andrew Redington/Getty Images) ( 174161879 )

Henrik Stenson of Sweden talks to his caddie on the 11th green during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Scott Heppell) ( British Open Golf )

Ernie Els of South Africa tees off on the 3rd hole during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Rob Carr/Getty Images) ( 174161172 )

Tiger Woods of the United States plays a shot on the 10th hole during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Matt Dunham) ( APTOPIX British Open Golf )

Adam Scott of Australia watches his tee shot on the 11th hole during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Stuart Franklin/Getty Images) ( 174165172 )

Phil Mickelson of the United States tees off from the 3rd tee during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Rob Carr/Getty Images) ( 174164904 )

Lee Westwood of England tees off on the 8th during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Andy Lyons/Getty Images) ( 174165106 )

Ian Poulter of England bites his putter after missing a birdie putt on the 1st green during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Andy Lyons/Getty Images) ( 174158143 )

Lee Westwood of England reacts after a drive during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Rob Carr/Getty Images) ( 174167208 )

Adam Scott of Australia attempts to chip on the green during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Stuart Franklin/Getty Images) ( 174167278 )

Henrik Stenson of Sweden hits out of the bunker on the 13th during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Rob Carr/Getty Images) ( 174170637 )

Skier Lindsey Vonn watches her boyfriend, Tiger Woods of the U.S., during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013. REUTERS/Brian Snyder ( GOLF-OPEN/ )

Tiger Woods of the U.S. hits out of the rough on the tenth hole during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013. REUTERS/Brian Snyder ( GOLF-OPEN/ )

Shingo Katayama of Japan prepares to play off the first tee during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Scott Heppell) ( British Open Golf )

Francesco Molinari of Italy reacts after missing his birdie putt on the fourth green during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013. REUTERS/Toby Melville ( GOLF-OPEN/ )

Lee Westwood of England gestures after playing off the third tee during the final round of the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Peter Morrison) ( British Open Golf )

US golfer Hunter Mahan (R) tees off on the fourth during the fourth and final round of the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013. ADRIAN DENNIS/AFP/Getty Images ( 521522447 )

Australia's Adam Scott tees off on the fourth during the fourth and final round of the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013 . PETER MUHLY/AFP/Getty Images ( 521521389 )

US golfer Tiger Woods catches the ball from his caddie on the eighth green during the fourth and final round of the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013 . PETER MUHLY/AFP/Getty Images ( 521522660 )

Adam Scott of Australia watches his tee shot on the fourth hole during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013. REUTERS/Toby Melville ( GOLF-OPEN/ )

Ian Poulter of England watches his second shot on the 14th hole during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013. REUTERS/Toby Melville ( GOLF-OPEN/ )

England's Lee Westwood plays his first shot out of a bunker on the first during the fourth and final round of the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013. ADRIAN DENNIS/AFP/Getty Images ( 521522336 )

A board shows the final score at the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013. US golfer Phil Mickelson won the British Open at Muirfield with a superb final round of 66. The 43-year-old American won with a three under total of 281, three strokes clear of Henrik Stenson who had a closing 70. GLYN KIRK/AFP/Getty Images ( 521526836 )

Phil Mickelson of the United States makes a birdie putt on the 18th green during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Andy Lyons/Getty Images) ( 174170246 )

Phil Mickelson of the U.S. reacts after making his birdie putt on the 18th green during the final round of the British Open golf championship at Muirfield in Scotland July 21, 2013 REUTERS/Toby Melville ( GOLF-OPEN/ )

Phil Mickelson of the United States reacts to a birdie putt on the 18th hole during the final round of the 142nd Open Championship at Muirfield on July 21, 2013 in Gullane, Scotland. (Photo by Rob Carr/Getty Images) ( 174167932 )

US golfer Phil Mickelson poses for pictures with the Claret Jug after winning the 2013 British Open Golf Championship at Muirfield golf course at Gullane in Scotland on July 21, 2013. Mickelson won the British Open at Muirfield with a superb final round of 66. The 43-year-old American won with a three under total of 281, three strokes clear of Henrik Stenson who had a closing 70. PETER MUHLY/AFP/Getty Images ( 521525819 )

Phil Mickelson of the United States is hugged by his wife Amy after winning the British Open Golf Championship at Muirfield, Scotland, Sunday July 21, 2013. (AP Photo/Jon Super) ( APTOPIX British Open Golf )