England's Justin Rose clinched his first major title with a nerve-jangling two-shot victory at the 113th US Open after overhauling 54-hole leader Phil Mickelson in the final round.
Rose closed with a level-par 70 in difficult scoring conditions at Merion Golf Club, posting a one-over total of 281 to become the first Englishman to win the year's second major since Tony Jacklin at Hazeltine in 1970.
American Mickelson bogeyed three of the last six holes for a 74 to tie for second with Australian Jason Day (71).
It was an especially emotional win for Rose, coming on Father's Day, and he pointed a finger skywards after two-putting for par on the 18th green to acknowledge the memory of his own father Ken, who died from leukaemia in 2002.
"It wasn't lost on me that today was Father's Day," the 32-year-old Rose said during the trophy presentation after mixing five birdies with five bogeys in the final round.
"For it to all just work out for me, on such an emotional day, I just couldn't help but look up to the heavens and think that my old dad Ken had something to do with it," said Rose, after winning his fifth title on the US PGA Tour.
Left-hander Mickelson, serenaded with 'Happy Birthday' chants from the fans on every hole after turning 43, had to settle for a record sixth runner-up spot at the US Open after carding a 74.
"For me, it's very heart-breaking," said Mickelson, who had previously finished second at the event in 1999, 2002, 2004, 2006 and 2009.
"This could have been a really big turnaround for me on how I look at the US Open and the tournament that I'd like to win, after having so many good opportunities.
"This week was my best opportunity, I felt, heading in, certainly the final round, the way I was playing and the position I was in."
Mickelson, a four-times major champion, had to hole out for birdie from a swale below the green at the par-four last to force a playoff but his shot ran through the back of the green from where he two-putted for bogey.
Day shared second place with Mickelson at three over with Americans Hunter Mahan (75), Jason Dufner (67) and Billy Horschel (74), and twice former champion Ernie Els of South Africa (69), a further two strokes back in a tie for fourth.
Tiger Woods, who teed off among the early starters, posted a two-over-par 74 for a 13-over total of 293, his worst finish after four rounds at a US Open as a professional.
Helped by consecutive birdies at the 12th and 13th, Rose edged one ahead on a tightly bunched leaderboard and, though he bogeyed 14 and 16, he was handed the lead for good when Mickelson and Mahan both stumbled at the tricky par-four 15th.
Rose safely parred the short 17th before having to face the brutal challenge of the 511-yard, uphill last, the most difficult hole on the course during the week.
He struck a superb tee shot down the middle, then hit his four-iron approach right at the flag for his ball to roll through to the back of the green before nestling on the fringe.
From there, Rose used a three-wood to putt and very nearly sank the birdie attempt, his ball curling left-to-right before halting inches short of the cup.
After a muggy, overcast and breezy morning, the wind began to pick up, causing all sorts of problems for players already battling to cope with slick, sloping greens, narrow tilting fairways and heavy rough.
South African Charl Schwartzel, Mickelson, Mahan, Rose and Day all enjoyed moments at the top of the leaderboard but it was Mickelson who provided the shot of the day when he stunningly holed out from the right rough to eagle the par-four 10th.
Mickelson watched from 75 yards out as his ball bounced short of the pin before rolling up into the cup, then jumped up and down with both arms raised skywards.
That briefly put him a stroke clear but Rose responded with birdies at 12, where he struck a superb approach to two feet, and at 13, where he drained an 18-footer. Mickelson's title bid effectively ended with bogeys on 13 and 15.
Woods, tournament favourite at the start of the week after winning four times in just eight starts on the 2013 PGA Tour, birdied the par-four first but then ran up a triple-bogey eight at the second after hitting his tee shot out-of-bounds.
The three-times US Open champion added a further two birdies and four bogeys to finish in a tie for 32nd, his bid for a first major title in five years coming up well short.
"I did a lot of things right, unfortunately I did a few things wrong, as well," said world number one Woods, a 14-times major champion. "I didn't make a lot of putts the first couple of days and yesterday."
Northern Irish world number two Rory McIlroy, the US Open champion at Congressional in 2011, finished a further shot back at 14 over after signing off with a 76.
New Zealand's Steve Alker finished at 15-over par in a tie for 45th place with the likes of Sergio Garcia and Adam Scott after firing a two-over par 72 in his final round.
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