Reigning U.S. Women’s Open champion Chun matched the low round of the day with a bogey-free six-under 65, while defending champion Thompson had 66 at Blythefield Country Club in Grand Rapids, Michigan. At 15-under 198, they enjoy a one-shot advantage over South Korean Kim Sei-young, who equaled the 65 by Chun and Shanshan Feng of China. "Today my iron shot great,” Chun told reporters.
