So Yeon Ryu had six birdies in an eight-hole stretch and shot a 7-under 64 on Friday to take the second-round lead in the Kingsmill Championship.
Ranked 11th in the world but sixth in the race for the four spots on South Korea's Olympic team, Ryu opened with a bogey on the 10th hole, then used the birdie run to make the turn in 5-under 30.
Ariya Jutanugarn shot a nearly mistake-free 4-under 67 Sunday and won the Kingsmill Championship by one for her second consecutive LPGA victory.
The 20-year-old, who became the first Thai winner in tour history two weeks ago in Alabama, gave up her lead briefly after an early bogey, but she played the final 16 holes in 5 under to keep at bay all the challengers needing her to falter. She finished with a 14-under 270 for four trips over Kingsmill's 6,347-yard River Course.