Defending champion Aaron Rai was within a shot of the lead as bad weather curtailed the second round of the Wyndham Championship.
The Englishman, who opened with a seven-under 63 at the Sedgefield Country Club in North Carolina, picked up six strokes before lightning forced the players off the course.
He trails American Cameron Young, who had reached 14 under when the weather intervened. Fellow American Mac Meissner shot a seven-under 63 and Sungjae Im of South Korea a six-under 64 to lead in the clubhouse on 12-under par.
"For me it's not necessarily about this week. I've got a goal. In the middle of September I'd like to be in New York playing on that Ryder Cup team," Young said. "If I can achieve that, I can achieve a lot of things over these next four weeks. So I'm trying to keep th