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Steve Stricker putts on the ninth hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Darron Cummings) ( US Open Golf )

Phil Mickelson of the United States smiles as he walks off the 11th tee during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170573341 )

Dustin Johnson of the United States hits his tee shot on the sixth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170571495 )

Adam Scott of Australia hits a shot from a bunker on the fourth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170557512 )

Nick Watney of the United States hits his tee shot on the 18th hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Scott Halleran/Getty Images) ( 170573209 )

Belgium's Nicolas Colsaerts hits from a sand trap to the first green during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

Bubba Watson reacts to a missed putt on the sixth green during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Charlie Riedel) ( US Open Golf )

Luke Donald of England hits his tee shot on the 16th hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170547354 )

Casey Wittenberg of the United States hits a tee shot on the fifth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170554810 )

Nicolas Colsaerts, of Belgium, tosses his club to his caddie after making a birdie on the eighth hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Charlie Riedel) ( US Open Golf )

Tiger Woods watches his shot on the 13th hole during the second round of the U.S. Open golf tournament at Merion Golf Club Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/The Express-Times, Matt Smith) ( US Open Golf )

Luke Donald of England hits his tee shot on the fifth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170557886 )

Hideki Matsuyama of Japan hits a shot from a bunker on the 13th hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Scott Halleran/Getty Images) ( 170563633 )

Tiger Woods of the United States reacts on the ninth green during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170563780 )

Adam Scott of Australia hits his tee shot on the ninth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170563811 )

Tiger Woods of the United States grimaces after hitting his second shot on the eighth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170563843 )

Lee Westwood of England reacts on the tenth green after completing Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170569188 )

(L-R) Rory McIlroy of Northern Ireland and Tiger Woods of the United States walk up the tenth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Ross Kinnaird/Getty Images) ( 170569444 )

Billy Horschel of the United States reacts to a missed putt for birdie on the 17th green during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Scott Halleran/Getty Images) ( 170569843 )

Luke Donald of England hits a shot from a bunker on the second hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170569870 )

Justin Rose of England hits his tee shot on the third hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by David Cannon/Getty Images) ( 170572808 )

Tiger Woods of the United States hits his tee shot on the eighth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by David Cannon/Getty Images) ( 170569079 )

Phil Mickelson of the United States hits his second shot on the second hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Ross Kinnaird/Getty Images) ( 170573020 )

Justin Rose of England plays his second shot on the second hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by David Cannon/Getty Images) ( 170572991 )

Phil Mickelson of the United States hits a shot on the fourth hole during Round Two of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Ross Kinnaird/Getty Images) ( 170573051 )

Australia's Adam Scott hits from a bunker on the 15th hole during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Adam Hunger ( GOLF-OPEN/ )

England's Luke Donald tees off on the 14th hole during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

England's Luke Donald hits to the green on the eighth hole during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

Northern Ireland's Rory McIlroy reacts after missing a putt on the 10th green during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Adam Hunger ( GOLF-OPEN/ )

England's Luke Donald tees off on the ninth hole during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

Phil Mickelson of the U.S. walks to the third green during the second round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

Matt Kuchar hits out of a bunker on the sixth hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash) ( US Open Golf )

Rory McIlroy reacts after missing a short putt on the 14th green during the second round of the U.S. Open golf tournament at Merion Golf Club Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/The Express-Times, Matt Smith) ( US Open Golf )

Phil Mickelson hits out of a bunker during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez) ( US Open Golf )

Padraig Harrington, of Ireland, tees off on the fifth hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar) ( US Open Golf )

Jamie Donaldson, of Wales, tees off on the eighth hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez) ( US Open Golf )

Zach Johnson hits out of a bunker on the 10th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar) ( US Open Golf )

Jim Furyk of the US reacts to a missed put on the 18th green during the completion of first round play at the US Open at Merion Golf Club June 14, 2013 in Ardmore, Pennsylvania. AFP PHOTO/Brendan SMIALOWSKI/AFP/Getty Images ( 520578647 )

Tiger Woods (L) of the U.S. hits from the 16th fairway as Steve Williams, caddie for Australia's Adam Scott and Woods' former caddie, looks on during the weather delayed first round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

Rory McIlroy of Northern Ireland hits from a bunker on the 15th hole during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170538655 )

Argentina's Angel Cabrera drops his ball near the 17th green during the weather delayed first round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Adam Hunger ( GOLF-OPEN/ )

Hideki Matsuyama of Japan hits his second shot on the 18th hole during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Ross Kinnaird/Getty Images) ( 170538489 )

Tiger Woods of the U.S. makes his second shot on the 12th hole during the weather delayed first round of the 2013 U.S. Open golf championship at the Merion Golf Club in Ardmore, Pennsylvania, June 14, 2013. REUTERS/Matt Sullivan ( GOLF-OPEN/ )

Rory McIlroy of Northern Ireland walks across the 18th green during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Scott Halleran/Getty Images) ( 170540502 )

Kevin Streelman of the United States stretches on the fifth tee during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Ross Kinnaird/Getty Images) ( 170538561 )

Tiger Woods of the United States walks across the 18th green as a gallery of patrons look on during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170540539 )

Luke Donald, of England, tees off on the 18th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar) ( US Open Golf )

Jim Furyk of the United States chips to the 17th green as caddie Mike 'Fluff' Cowan looks on during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Andrew Redington/Getty Images) ( 170538701 )

Sang-Moon Bae of Korea bends his club on the fifth hole during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Ross Kinnaird/Getty Images) ( 170538810 )

Luke Donald of England reacts to a putt for bogey on the 18th hole during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Scott Halleran/Getty Images) ( 170538954 )

Josh Teater of the United States hits a shot from a bunker on the 15th hole during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Rob Carr/Getty Images) ( 170540393 )

Caddie Steve Williams and Tiger Woods of the United States shake hands on the 18th green during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Scott Halleran/Getty Images) ( 170540498 )

Thorbjorn Olesen of Denmark waves after putting on the 17th green during a continuation of Round One of the 113th U.S. Open at Merion Golf Club on June 14, 2013 in Ardmore, Pennsylvania. (Photo by Drew Hallowell/Getty Images) ( 170540571 )

John Nieporte hits out of a bunker on the seventh hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez) ( US Open Golf )