Third Round of Samsung World Championship

1 of 5 Donald Miralle/Getty Images
Na Yeon Choi made 10 birdies and a bogey for a nine-under 63 on Saturday. Choi leads Jiyai Shin by two strokes.
2 of 5 Denis Poroy/AP
made six birdies and two bogeys for a four-under 68.
3 of 5 Denis Poroy/AP
trails by three shots after a 68.
4 of 5 Donald Miralle/Getty Images
birdied four of the last six holes to remain in contention.
5 of 5 Donald Miralle/Getty Images
made three bogeys on the back nine to shoot even par.More photos from the Samsung World Championship• Round 1 Gallery• Round 2 Gallery