#916449Serbia's Novak Djokovic signs autograph on a ball after the Roland Garros 2011 French Open's round 3 match against Argentina's Juan Martín del Potro.Sign in or register,to downloadAdd to cartRemove from cartPackage: Roland Garros 2011. Sixth DayCategories: SportsLocation: Paris, FranceEvent date: 27.05.2011Date published: 28.05.2011Author: Alexey KudenkoCredit: SputnikSource: SputnikOriginal: DigitalMedia: JPEG, 1824x2187px, 1.1Mbmatchtennis