Park had eagles at the sixth and 13th holes -- both par 5s -- in conditions that allowed for the players to attack the pin. There were a total of 10 eagles on the day.
Park is at 18-under 198 with one round to play. That's two strokes better than Suzann Pettersen, who twice had three-birdie runs, for a 6-under 66 and 54-hole total of 200.
Defending champion and world No. 1 Yani Tseng, who also eagled 13, had a bogey-free 66 and is third at 14-under. Catriona Matthew, whose round included an eagle at No. 6, is in fourth at 12-under after a third-round 68. Cristie Kerr used an eagle at 13 for a 5-under on the day and is fifth, eight strokes behind Park.
Park opened her Saturday round with a birdie but chipped in for eagle at 6. She suffered her lone bogey on the day at the seventh hole but answered with a birdie at No. 8.
Park had a birdie at No. 10 before the eagle at 13 while birdies at 16 and 18 left her lead at two strokes.