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GREENSBORO, N.C. - Byeong-Hun An shot a 5-under 65 on Friday in the Wyndham Championship to take a one-stroke lead into the weekend
An sits at 13 under halfway through the PGA Tour's final event before the FedExCup Playoffs.
Brice Garnett was a stroke back after a 64, and six players - including 2011 Wyndham winner Webb Simpson and first-round co-leader Sungjae Im - were at 9 under.
Adam Svensson also was in that group after shooting the best round of the day - a 61 - and threatening to become the first player on tour this year to break 60.