Oberholser opens narrow advantage in US

Arron Oberholser carded eight birdies and two bogeys in his second-round 64 to lead the Frys.com Open by a stroke on 11-under from Steve Allan.

Oberholser enjoyed a sizzling start at Grayhawk Golf Club, sinking birdies on four of his first six holes while the 33-year-old was also perfect off the tee as he hit every fairway.