Germany`s Martin Kaymer grinded his way into the final holes of the US Open with a six-stroke lead Sunday as rivals stumbled down the stretch at formidable Pinehurst.
Kaymer began the final seven holes on eight-under, having had two birdies and two bogeys on the day, both bogeys after play-it-safe putts to avoid dangerous chips.
Americans Dustin Johnson and Erik Compton shared second on two-under with no other rival below par as struggling challengers were unable to mount a threat to pressure Kaymer.
Former world number one Kaymer, seeking his second major title after the 2010 PGA Championship, could become only the seventh wire-to-wire winner of the US Open after opening with back-to-back 65s, the lowest 36-hole start in US Open history.
Sweden`s Henrik Stenson, who would become world number one with a victory, and American Rickie Fowler were on level par after bogeys at the 11th.