A three-shot swing on the 18th helped Danny Lee earn a share of the lead with Justin Thomas after the third round of the CJ Cup.
American star Justin Thomas used a bogey-free second round to surge to the top of the CJ Cup leaderboard.
Defending champion and world number one Brooks Koepka had a tricky opening to the CJ Cup in South Korea, as An Byeong-hun surged clear.
Sebastian Munoz is the man to beat heading into the final round of the PGA Tour event in Jackson, Mississippi.
After a second straight six-under 66, Byeong Hun An edged clear at the Sanderson Farms Championship.
South Korea's An carded a four-under-par 66 to preserve his position atop the leaderboard following Saturday's third round in Greensboro.
An Byeong-hun carded a five-under 65 to grab the outright lead at the Wyndham Championship.
South Korean duo An Byeong-hun and Im Sung-jae share a one-stroke lead at the Wyndham Championship.
Rickie Fowler pulled clear at the Phoenix Open after firing a fine seven-under 64 in the third round.
Thomas Pieters and Thomas Detry will hold a handsome five-stroke advantage for Belgium going into the final round of the World Cup of Golf.