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Spain's Rafael Nadal wipes his face during his tennis match against Czech Lukas Rosol at the Swiss Indoors tennis tournament on October 26, 2015 in Basel, northern Switzerland. AFP PHOTO / FABRICE COFFRINI (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)

Spain's Rafael Nadal wipes his face during his tennis match against Czech Lukas Rosol at the Swiss Indoors tennis tournament on October 26, 2015 in Basel, northern Switzerland.  AFP PHOTO / FABRICE COFFRINI        (Photo credit should read FABRICE COFFRINI/AFP/Getty Images)