Defending champion Rafael Nadal advanced to the semifinals at Wimbledon by beating Mardy Fish 6-3, 6-3, 5-7, 6-4 Wednesday. Nadal is 31-2 at Wimbledon since 2006. He lost in the final in 2006 and '07, but then won the following year. He missed the 2009 edition because of injury and won again in 2010.