South Korea's Si Woo Kim has recorded a second-round 60 to establish a two-shot lead at the Wyndham Championship.
The world number 115 began the day in a tie for 41st place but seven birdies in his first 11 holes put him in contention to become the latest player to record a 59 on the PGA Tour.
That feat came within touching distance with an eighth birdie and an eagle but a wayward tee shot on his last hole meant that he had to settle for par and a score of 60.
Four players - including Jim Furyk and Hideki Matsuyama - are in a group of four in second position, while Luke Donald remains in the top 10 after recording a 68.
Graeme McDowell is in a group of 15 players in a share of 11th position but US PGA champion Jimmy Walker missed the cut.