PHIL MICKELSON came up short in a US Open for a record fifth time as Lucas Glover stayed calm to claim a twoshot victory on a dramatic final day.

Glover had started the day with a five-shot lead over the field at seven under par alongside co-leader Ricky Barnes as the rain-delayed championship moved into a fifth day at Bethpage Black.

Barnes disintegrated with six bogeys in seven holes and Glover was caught by Mickelson and David Duval at four under and three under, while England’s Ross Fisher also challenged.

Yet his rivals fell away at the most crucial time of all, all bogeying either the 15th or 17th holes or both as 29-year-old Glover stayed calm to win at the 109th US Open.

‘‘I didn’t expect this on Thursday, to say the least,’’ Glover said. ‘‘But I was playing well coming in and I knew if I put four (rounds) together I might have a chance.

‘‘It feels pretty good...obviously I’m very excited and just happy I hung in there.’’ Glover, with one previous victory on the PGA Tour in 2005, won his first major with a one-birdie, four-bogey finalround, three-over 73, good enough to hold off Mickelson (70), Duval (71) and Barnes (76) by two strokes.

Mickelson, who moves ahead of four-time runners-up Jack Nicklaus, Arnold Palmer, Robert Trent Jones Jr and Sam Snead, will now step away from the game to be with his wife Amy, who has breast cancer.

‘‘Certainly I’m disappointed, but now that it’s over, I’ve got more important things going on, and, oh well,’’ Mickelson said.

Fisher claimed fifth, his best majors finish, a further shot behind following a 72 with 2008 winner Tiger Woods tied for sixth at level par alongside fellow American Hunter Mahan and Denmark’s Soren Hansen.

Rory McIlroy finished in a tie for 10th on his US Open debut.

The tournament had been blown wide open by a finalround collapse from thirdround leader Barnes.