 Between the seven rounds needed for a championship, the slow-playing surface and the best-of-five-set men's singles matches, the event is widely considered to be the most physically demanding tennis tournament in the world.Officially named in French "Championnats Internationaux de France de tennis" and "Tournoi de Roland-Garros" (the "French International Championships of Tennis" or "Roland Garros Tournament" in English), the tournament is referred to in English as the "French Open" and alternatively as "Roland Garros", which is the designation used by the tournament itself in all languages.