Guillermo Garcia-Lopez vs Juan Martin Del Potro at the U.S. Open in New York

Guillermo Garcia-Lopez of Spain returns the ball to Juan Martin Del Potro of Argentina in the first set during round-one action at the U.S. Open Championship held at the USTA Billie Jean King National Tennis Center on August 28, 2013 in New York City. UPI Photo/Monika Graff