Las Vegas - JJ Spaun clung to a one-stroke lead over fellow American Kelly Kraft after Saturday's completion of the second round of the US PGA Shriners Hospitals for Children Open.
Kraft birdied two of the last three holes when he resumed play after darkness halted the second round Friday with 28 players still on the Summerlin course at Las Vegas.
Spaun completed a second-round 65, six under par, on Friday to stand on 11-under-par 131 after 36 holes.
But Kraft finished his own round of 65 to stand on 132 after finishing his last three holes, sinking a 12-foot birdie putt at the par-5 16th and closing with a 15-foot birdie putt at 18.
He missed a 15-footer at the par-3 17th and settled for par.
Spaun, who missed the cut in last year's event, led at the halfway mark for the first time in 34 career US PGA events. His first-ever lead after any round came last week, when he finished level 34th at the Sanderson Farms Championship.
Robert Garrigus was third on 135 with fellow American Patton Kizzire and Australian Aaron Baddeley on 136 and Germany's Stephan Jaeger and South Korean Whee Kim, the first-round leader with an opening 65, sharing sixth on 137.