Doris Chen, the 2014 NCAA individual champion at USC and the 2010 U.S. Girls’ Junior champion, was disqualified after rules officials determined she had breached Rule 15-3b when she played a ball that had been out of bounds and then moved back in bounds on the 17th hole during Friday’s seventh round at the No. 7 course. In a statement, the tour said: “Ms. Chen and her caddie were made aware that the ball had been moved. According to reports from Golfweek and Golf Channel, Chen’s mother, Yuh-Guey Lin, is believed to have moved the ball.