Grand SlamThe Grand Slam tournaments, also referred to as majors, are the world's four most important annual tennis events. The Grand Slam schedule consists of the Australian Open (men's and women's singles), the French Open (men's and women's singles), Wimbledon (ladies' and gentlemen's singles) and the US Open (men's and women's singles).
Grand Slam tournaments are not operated by the Association of Tennis Professionals (ATP) or the Women's Tennis Association (WTA), but by the International Tennis Federation (ITF). However, the ATP and WTA do award ranking points based on a player's performance.