Spain's Rafael Nadal returns the ball to Argentina's Horacio Zeballos during the final of the VTR Open in Vina del Mar, Chile, Sunday, Feb. 10, 2013. Nadal lost to Zeballos 6-7 (2), 7-6 (6), 6-4 in Sunday's final of the VTR Open, the Spaniard's comeback tournament after seven months out with a torn tendon in his left knee,in Vina del Mar, Chile, Sundays, Feb. 10, 2013 .(AP Photo/Luis Hidalgo)