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LANCASTER, PA - JULY 10: Amy Yang of South Korea plays a shot on the 18th hole during the second round of the U.S. Women's Open at Lancaster Country Club on July 10, 2015 in Lancaster, Pennsylvania. (Photo by Sam Greenwood/Getty Images)

LANCASTER, PA - JULY 10:  Amy Yang of South Korea plays a shot on the 18th hole during the second round of the U.S. Women's Open at Lancaster Country Club on July 10, 2015 in Lancaster, Pennsylvania.  (Photo by Sam Greenwood/Getty Images)