Argentine Juan Martin Del Potro (R) shakes hands with Croatia's Marin Cilic after winning during their men's Singles 3nd Round tennis match of the French Open tennis tournament at the Roland Garros stadium, on June 1, 2012 in Paris. AFP PHOTO / JACQUES DEMARTHONJACQUES DEMARTHON/AFP/GettyImages
Argentine Juan Martin Del Potro (R) shakes hands with Croatia's Marin Cilic after winning during their men's Singles 3nd Round tennis match of the French Open tennis tournament at the Roland Garros stadium, on June 1, 2012 in Paris. AFP PHOTO / JACQUES DEMARTHONJACQUES DEMARTHON/AFP/GettyImages