Spain's Rafael Nadal returns the ball to France's Gael Monfils during their final tennis match in Qatar's ExxonMobil Open in Doha on January 4, 2014. The world number one defeated Monfils 6-1, 6-7 (5/7), 6-2 to win the Qatar Open.  AFP PHOTO/MARWAN NAAMANI        (Photo credit should read MARWAN NAAMANI/AFP/Getty Images)