GREENSBORO, N.C. (AP) - Byeong Hun An shot a 5-under 65 on Friday in the Wyndham Championship to take a one-stroke lead into the weekend
An was at 13-under 127 halfway through the PGA Tour's final event before the FedEx Cup 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.
An, who shared the first-round lead with Im at 8 under, made his move up the leaderboard with three straight birdies late in his round.