Webb Simpson had a closing two-under 68 to win the 112th US Open on Sunday at Olympic Club in San Francisco.
Three birdies from No. 6 and another on the 10th moved Simpson to one-over and he made par the rest of the way to seal his first Major title at 281.
He finished one stroke clear of Michael Thompson and 2010 champion Graeme McDowell, who, playing in the last flight, muffed a 24-foot birdie putt that would have forced an 18-hole playoff with Simpson.
Starting the day tied for the lead at one-under, McDowell had a disastrous first nine featuring four bogeys. He remained at three over through 14 holes and still had a chance but made just one birdie in the final four holes, on the 17th, for a 73 and a 282 total.
Thompson was five-over entering the final round and got to plus two after just one bogey and four birdies, the last at No. 16, before making par on the last two holes for a 67.
Overnight co-leader Jim Furyk slipped to two-over with bogey on the 16th but still had a shot at caching up after Simpson took the clubhouse lead. But he could only muster a par on the 17th then bogeyed the closing hole to finish joint fourth with Padraig Harrington, David Toms, John Peterson and Jason Dufner.
Tiger Woods, who had held a share of the halfway lead after a 69-70 start, started Sunday at plus five but all hopes were dashed with a bogey-bogey-double bogey start. He dropped shots twice more before his first birdie on No. 8 en route to a 73 that put him in a tie for 21st at 287.