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Bubba Watson of the US bites on his club after teeing off on 16th hole during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Timothy A. CLARY/AFP/Getty Images ( 528874432 )

Dustin Johnson tees off on the third hole during the second round of the Masters golf tournament Friday, April 11, 2014, in Augusta, Ga. (AP Photo/David J. Phillip) ( Masters Golf )

Phil Mickelson hits out of a bunker on the 12th hole during the second round of the Masters golf tournament Friday, April 11, 2014, in Augusta, Ga. (AP Photo/Charlie Riedel) ( Masters Golf )

Bubba Watson of the United States hits s shot on the second tee during the second round of the 2014 Masters Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. (Photo by Andrew Redington/Getty Images) ( 484061477 )

D.A. Points of the United States hits out of the bunker on the fourth hole during the second round of the 2014 Masters Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. (Photo by Rob Carr/Getty Images) ( 484061887 )

Sang-Moon Bae of Korea plays a shot on the second hole during the second round of the 2014 Masters Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. (Photo by Harry How/Getty Images) ( 484062313 )

Craig Stadler of the United States hits a shot out of the bunker on the second hole during the second round of the 2014 Masters Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. (Photo by Harry How/Getty Images) ( 484091857 )

Justin Rose of England hits a shot on the fourth tee during the second round of the 2014 Masters Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. (Photo by Rob Carr/Getty Images) ( 484092015 )

Kevin Stadler of the United States hits a shot from the eighth fairway during the second round of the 2014 Masters Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. (Photo by Harry How/Getty Images) ( 484112265 )

Louis Oosthuizen, of South Africa, reacts after a missed putt on the ninth green during the second round of the Masters golf tournament Friday, April 11, 2014, in Augusta, Ga. (AP Photo/Darron Cummings) ( Masters Golf )

Chris Kirk hits off the fifth fairway during the second round of the Masters golf tournament Friday, April 11, 2014, in Augusta, Ga. (AP Photo/Matt Slocum) ( Masters Golf )

Nick Watney of the US plays a shot during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 528866988 )

Bubba Watson of the US tees off on fourth during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Jim WATSON/AFP/Getty Images ( 528869413 )

A woman holds a towel after being hit by a ball played by Ben Crenshaw of the US on the eight fairway during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Jim WATSON/AFP/Getty Images ( 528869167 )

Chris Kirk of the US loses his club as he plays a shot during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Jim WATSON/AFP/Getty Images ( 528869274 )

Jonas Blixt of Sweden plays a shot during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Jim WATSON/AFP/Getty Images ( 528873018 )

Thorbjorn Olesen of Denmark plays a shot during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 528873822 )

Bubba Watson of the US reacts after making a birdie putt on the 14th green during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Timothy A. CLARY/AFP/Getty Images ( 528875744 )

Rickie Fowler of the US tees off during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. Bubba Watson of the US ripped off five birdies in a row from the 12th hole to take a four-shot lead in the second round of the Masters. AFP PHOTO/JIM WATSON/AFP/Getty Images ( 528876826 )

Billy Horschel of the US celebrates after hitting eagle during the second round of the 78th Masters Golf Tournament at Augusta National Golf Club on April 11, 2014 in Augusta, Georgia. AFP PHOTO/Emmanuel DUNAND/AFP/Getty Images ( 528872744 )