GREENSBORO (AP) -- Jimmy Walker shot an 8-under 62 on Friday to top the leaderboard at 12 under in the Wyndham Championship.
Defending champion Webb Simpson was a stroke back after a 63, and first-round leader Carl Pettersson, Tim Clark, Sergio Garcia and rookie Harris English were 10 under. Pettersson had a 68, Clark shot 67, Garcia 63 and English 64.
Tim Herron matched the tournament record with a 61, but was still seven strokes back.
Play was halted for 1 hour, 17 minutes late in the day when a system of thunderstorms passed through the central North Carolina Triad.
Walker, who began the day four strokes back, had eight birdies in compiling one of the best two-day scores in event history. Only Pettersson at 125 in 2008 was better than Walker through 36 holes at Sedgefield Country Club.
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