Spanish tennis player Rafael Nadal hits a return during an ATP Vina del Mar tournament doubles match with Argentine Juan Monaco against Czech Republic's Frantisek Cermank and Lukas Dlouhy in Vina del Mar, Valparaiso Region, Chile, February 5, 2013. (Xinhua/Jorge Villegas)
Spanish tennis player Rafael Nadal hits a return during an ATP Vina del Mar tournament doubles match with Argentine Juan Monaco against Czech Republic's Frantisek Cermank and Lukas Dlouhy in Vina del Mar, Valparaiso Region, Chile, February 5, 2013. (Xinhua/Jorge Villegas)
Spanish tennis player Rafael Nadal (L) greets Argentine Juan Monaco (R) during an ATP Vina del Mar tournament doubles match against Czech Republic's Frantisek Cermank and Lukas Dlouhy in Vina del Mar, Valparaiso Region, Chile, February 5, 2013. (Xinhua/Jorge Villegas)
Spanish tennis player Rafael Nadal reacts during an ATP Vina del Mar tournament doubles match with Argentine Juan Monaco against Czech Republic's Frantisek Cermank and Lukas Dlouhy in Vina del Mar, Valparaiso Region, Chile, February 5, 2013. (Xinhua/Jorge Villegas)
Spanish tennis player Rafael Nadal (R) receives a commemorative plate as an illustrious visitor from the city mayor Virginia Reginato (L) after a Vina del Mar ATP tournament doubles match, with Argentine Juan Monaco against Czech Republic's Frantisek Cermank and Lukas Dlouhy, in Vina del Mar, Valparaiso Region, Chile, on February 5, 2013. (Xinhua/Jorge Villegas)