Seung-Yul Noh became the first player to complete 54 holes at the TPC Louisiana in Avondale, La., without a bogey and strung together three birdies late in his round Saturday to surge two strokes ahead of Keegan Bradley atop the Zurich Classic leaderboard.
Noh shot a seven-under-par 65 to reach 18-under 198. The South Korean has been playing with yellow and blue ribbons affixed to his cap to honor victims of the fatal ferry accident in the waters off of his home country.
Bradley, who began the day tied for seventh at nine under, pulled into a first-place tie with Noh on No. 15 with his seventh birdie of the day. Then, Noh, who was tied for third at 11 under after two rounds, made birdie putts of 13 feet on No. 14 and 10 feet on No. 15 before hitting a 112-yard approach shot to within a foot for another birdie, bringing him to 18 under.
Bradley also shot 65. Robert Streb was third, three shots back after a 68.
Ben Martin, who had a three-shot lead after two rounds, shot a 73 to drop into a tie for fourth with Jeff Overton and Andrew Svoboda at 14 under. Overton shot 67, and Svoboda 70.
Stacy Lewis matched 17-year-old playing partner Lydia Ko with birdies on Nos. 15 and 16 and added another on the 17th to take a one-stroke lead in the Swinging Skirts LPGA Classic at Lake Merced Golf Club in Daly City, Calif.
The third-ranked Lewis and fourth-ranked Ko each shot four-under 68. Winless since the Women's British Open in August, Lewis had a 10-under 206 total.
Ko won the Canadian Women's Open as an amateur the last two years and took the Swinging Skirts World Ladies Masters in December in Thailand in her second start as a professional. She has five victories in pro events.
Jenny Shin, who also shot 68, was four strokes back at six under.
Michelle Wie, the winner last week in Hawaii, was tied for 13th at one under after a 71.
France's Alexander Levy followed his career-best 62 with a two-under 70 in pelting rain and gusting wind to take a three-stroke lead into the final round of the China Open in Shenzhen.
Levy had a 16-under 200 total at Genzon Golf Club. Spain's Alvaro Quiros was second after a 68.