Spain's Rafael Nadal serves to Argentina's David Nalbandian during the Brazil Open ATP tournament final match in Sao Paulo, Brazil, Sunday, Feb. 17, 2013. (AP Photo/Andre Penner)

Associated Press
Spain's Rafael Nadal serves to Argentina's David Nalbandian during the Brazil Open ATP tournament final match in Sao Paulo, Brazil, Sunday, Feb. 17, 2013. (AP Photo/Andre Penner)
Spain's Rafael Nadal serves to Argentina's David Nalbandian during the Brazil Open ATP tournament final match in Sao Paulo, Brazil, Sunday, Feb. 17, 2013. (AP Photo/Andre Penner)
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