Grand Slam (tennis)

The Grand Slam tournaments, also referred to as majors, are the world's four most important annual professional tennis events. The tournaments offer the most ranking points, prize money, public and media attention, the greatest strength and size of field, and longest matches for men. Grand Slam tournaments are operated by the International Tennis Federation (ITF). The Association of Tennis Professionals (ATP) and the Women's Tennis Association (WTA) also award ranking points based on a player's performance at a major.