Holding a four-shot lead over countrywoman Sung Hyun Park, Chun is at 19-under overall. Chun, the 2015 U.S. Women's Open champion, had six birdies and an eagle for the round. Discussing what to do with her caddie for several minutes, Chun finally decided against a drop shot and declared it unplayable, going back to where she had taken the shot from and incurring a two-stroke penalty. More...