Graeme McDowell of Northern Ireland celebrates with his father Ken on the 18th green after winning the 110th U.S. Open at Pebble Beach.

Graeme McDowell of Northern Ireland celebrates with the trophy on the 18th green after winning the 110th U.S. Open at Pebble Beach.
 

Graeme McDowell of Northern Ireland reacts on the 18th green after winning the U.S. Open at Pebble Beach.

Tiger Woods and Gregory Havret walk across the sixth green during the final round of the 110th U.S. Open.

Phil Mickelson hits his tee shot on the eighth hole during the final round of the 110th U.S. Open.
 

Graeme McDowell hits his tee shot on the seventh hole during the final round of the 110th U.S. Open.

Alex Cejka watches his drive on the first hole during the fourth round of the U.S. Open.

Amateur Russell Henley waves as he walks to the third tee during the fourth round of the U.S. Open. He finished 8-over for the tournament.

Tiger Woods hits a drive on the first hole during the fourth round of the U.S. Open.

Ernie Els hits a shot on the first hole during the fourth round of the U.S. Open.

Tom Watson looks at his ball after missing a birdie putt on the first hole during the fourth round of the U.S. Open.

Ryo Ishikawa of Japan hits a shot on the first hole during the fourth round of the U.S. Open.

Gregory Havret of France hits a drive on the first hole during the fourth round of the U.S. Open.

A Father's Day message is seen on the leaderboard near the 18th green during the final round of the 110th U.S. Open at Pebble Beach Golf Links on Sunday.

Padraig Harrington of Ireland waits on the first green during the final round of the 110th U.S. Open.

Ian Poulter hits his approach shot on the first hole during the final round of the 110th U.S. Open.

Charl Schwartzel hits from the 18th tee box during the third round of the 110th U.S. Open at Pebble Beach.

Kenny Perry watches his tee shot on the 16th hole during the third round of the 110th U.S. Open at Pebble Beach.

Padraig Harrington of Ireland hits his approach shot on the second hole during the third round of the 110th U.S. Open.

Nick Watney plays from a bunker on the second hole during the third round of the 110th U.S. Open at Pebble Beach.

Tiger Woods hits a shot on the second hole during the third round of the 110th U.S. Open at Pebble Beach.

Davis Love III watches a putt on the 15th green during the third round of the 110th U.S. Open at Pebble Beach.

Tom Watson walks off the 16th tee during the third round of the 110th U.S. Open at Pebble Beach Golf Links.

Ben Curtis hits from a bunker on the fourth green during the third round of the 110th U.S. Open at Pebble Beach.

Henrik Stenson and his caddie Fannie Sunesson stand on the first green during the third round of the 110th U.S. Open at Pebble Beach.

Jim Furyk hits his tee shot on the second hole during the third round of the 110th U.S. Open at Pebble Beach.

Phil Mickelson celebrates making birdie on the 11th hole during the second round of the 110th U.S. Open. Mickelson posted the best second-round score at 4-under par to rocket himself into a tie for second place heading into the weekend.

Soren Kjeldsen of Denmark hits his tee shot on the 13th hole during the second round of the 110th U.S. Open. He posted scores of 71 and 72 to start the tournament.

Ricky Barnes hits his tee shot on the second hole during the second round of the 110th U.S. Open. Barnes posted scores of 72 and 76 to start the tournament.

Ian Poulter hits his tee shot on the 18th hole during the second round of the 110th U.S. Open. He ended the second round at 1-over par.

Japan's Ryo Ishikawa takes his ball out of the hole on the 18th green during the second round of the 110th U.S. Open. Ishikawa sat near the top of the leaderboard after two rounds at 1-under.

Camilo Villegas of Colombia lines up a putt on the fifth hole during the second round of the U.S. Open. Villegas was 5-over par after the second round.

Davis Love III watches his bunker shot on the 18th hole during the second round of the U.S. Open. After two rounds, Love was 6-over par.

Dustin Johnson hits a shot on the 12th hole during the second round of the U.S. Open. Johnson posted rounds of 70 and 71 to start the tournament.

Tiger Woods waits to shoot on the 10th hole during the second round of the U.S. Open.

Paul Casey watches his tee shot on the 13th hole as Sergio Garcia of Spain looks on during the second round of the 110th U.S. Open at Pebble Beach. Casey posted scores of 69 and 73 to start the tournament.

Lee Westwood and Ernie Els walk up the 11th hole during the second round of the 110th U.S. Open. Els shot a 3-under for the round, while Westwood was even for the day.

Brendon de Jonge of Zimbabwe reacts to missing a putt on the 16th green during the second round of the 110th U.S. Open. De Jonge was even after the first two rounds, posting scores of 69 and 73.

Graeme McDowell celebrates a birdie putt on the fourth green during the second round of the 110th U.S. Open. McDowell held the lead at the end of his first two rounds, posting scores of 71 and 68.

Vijay Singh of Fiji hits his tee shot on the 13th hole during the second round of the 110th U.S. Open. Singh posted rounds of 72 and 74 to start the tournament.

Alex Cejka of Germany hits a shot on the 17th hole during the second round of the 110th U.S. Open. Cejka posted rounds of 70 and 72 to start the tournament.

Dustin Johnson watches his tee shot on the 14th hole during the second round of the 110th U.S. Open. Johnson shot a 3-under for the second round, putting him near the top of the leaderboard at the end of the day.

Tiger Woods takes a drop on the third hole during the second round of the 110th U.S. Open. Woods finished the second round at 4-over par for the tournament.

Rory McIlroy watches his tee shot on the seventh hole as Ryo Ishikawa of Japan looks on during the second round. McIlroy had rounds of 75 and 77 to start the tournament, while Ishikawa sat near the top of the leaderboard after Round 2 after shooting a 71 and 70.

Tom Watson hits a shot on the third fairway during the second round of the 110th U.S. Open at Pebble Beach Golf Links. Watson ended the second round at 7-over par.

Tiger Woods watches his drive on the second hole during the first round of the U.S. Open at Pebble Beach.
 

Ryo Ishikawa reacts after hitting out of a bunker on the 12th hole during the first round of the U.S. Open.

Ernie Els hits a shot on the first hole during the first round of the U.S. Open at Pebble Beach.

Lucas Glover hits out of a bunker on the 17th hole during the first round of the U.S. Open.

Phil Mickelson waits to drive on the ninth hole during the first round of the U.S. Open.
 

David Toms hits out of a bunker on the eighth hole during the first round of the U.S. Open.

Mike Weir reacts after missing a par putt on the 18th hole during the first round of the U.S. Open.

Zach Johnson hits a drive on the second hole during the first round of the U.S. Open.

Soren Kjeldsen hits his tee shot on the second hole during the first round of the 110th U.S. Open at Pebble Beach Golf Links. Kjeldsen jumped out to an early lead, shooting 3-under on the front nine.

Geoff Ogilvy hits a shot on the second tee during the first round of the 110th U.S. Open at Pebble Beach. Ogilvy won the event in 2006.

K.J. Choi hits a shot on the second hole during the first round of the 110th U.S. Open at Pebble Beach.

Francesco Molinari of Italy looks over his yardage book on the second hole during the first round of the 110th U.S. Open at Pebble Beach.

Jim Furyk hits a shot on the tenth hole as he caddie Mike Cowan looks on during the first round of the 110th U.S. Open at Pebble Beach.

Phil Mickelson reacts to a missed putt on the 12th green during the first round of the 110th U.S. Open.

Luke Donaldhits his tee shot on the 12th hole during the first round of the 110th U.S. Open at Pebble Beach.

Camilo Villegas lines up his putt on the 12th green during the first round of the 110th U.S. Open at Pebble Beach.