Spain's Rafael Nadal celebrates at the end of the Brazil Open ATP tournament final tennis match against Argentina's David Nalbandian in Sao Paulo, Brazil, Sunday, Feb. 17, 2013. Nadal won 6-2, 6-3. (AP Photo/Andre Penner)

Photo by: Andre Penner

Spain's Rafael Nadal celebrates at the end of the Brazil Open ATP tournament final tennis match against Argentina's David Nalbandian in Sao Paulo, Brazil, Sunday, Feb. 17, 2013. Nadal won 6-2, 6-3. (AP Photo/Andre Penner)