Jimmy Walker and Hideki Matsuyama are tied for the lead going into the final round of the Hyundai Tournament of Champions in Kapalua, Hawaii.
Matsuyama shot a seven-under 66 on Sunday to match the best score of the week. He made three consecutive birdies on the front nine and back nine, and closed with a delicate pitch down a slope to within two feet of the cup for a birdie on the par-five 18th.
Walker began to pull away with five birdies in 10 holes. But he didn't make another birdie until a four-foot putt on the last hole for a 67. Walker and Matsuyama are tied at 17-under 202.
Defending champion Zach Johnson, among four players tied for the second-round lead, stumbled to a 73 and was six shots behind.
England's Andy Sullivan won the South African Open for his first European Tour title, beating South Africa's Charl Schwartzel with a 12-foot birdie putt on the first hole of a playoff.
Sullivan closed a five-under 67 to match Schwartzel at 11-under 277 at Glendower. Schwartzel, five strokes ahead entering the round, finished with a 74. He had two bogeys and a double bogey in his last five holes.