Argentina's tennis player David Nalbandian serves to Croatia's Marin Cilic during a Davis Cup quarterfinal match, at Parque Roca stadium in Buenos Aires on April 6, 2012. (Photo by Daniel Garcia/AFP/Getty Images)
Argentina's tennis player David Nalbandian serves to Croatia's Marin Cilic during a Davis Cup quarterfinal match, at Parque Roca stadium in Buenos Aires on April 6, 2012. (Photo by Daniel Garcia/AFP/Getty Images)