(Reuters) - South Korea's Choi Na-yeon obliterated the field with a stunning seven-under-par 65 to surge six shots clear in Saturday's third round of the U.S. Women's Open in Kohler, Wisconsin. On a breezy day with tricky hole locations at Blackwolf Run where only four other sub-par scores were recorded, Choi put herself in prime position to win her first major title. The 24-year-old Korean, who has triumphed five times on the LPGA Tour, seized control of the tournament in masterly fashion with eight birdies and a sole bogey to finish at eight-under 208. Choi's 65 was the 11th carded at a U.S. ... More...