Nadal Clinches 2013 Emirates Airline U.S. Open Series
Rafael Nadal has clinched the 2013 Emirates Airline U.S. Open Series men’s title when John Isner officially withdrew from the Winston-Salem Open in Winston-Salem, N.C., due to a hip injury. Isner was the only player who could have overtaken Nadal in the Emirates Airline U.S. Open Series standings. Nadal will now compete for the largest payout…

