In doubles, a team can win the Grand Slam by playing together, while an individual can win it by playing with different partners. A non-calendar-year Grand Slam is achieved by winning all fourmajor championships in a row but not in the same calendar year, whereas a Career Grand Slam is achieved by winning all four majors at any point during one's career.

Grand Slam competitions, often known as majors, are the four most prominent yearly professional tennis tournamentsin the world. The tournaments give the highest ranking points, prize money, public and media attention, the strongest and largest field, and the longest men's best of five sets match. Rather of the distinct men's and women's tour organizing bodies, the Association of Tennis Professionalsand Women's Tennis Association, the International Tennis Federationoversees them, but both the ATP and WTA issue ranking points based on players' results in tournaments.

The Australian Open is held in January, the French Open is held in late May and early June, Wimbledon is held in late June and early July, and the US Openis held in August and September. Each Grand Slam tournament lasts two weeks.

The Australian and American tournaments are held on hard courts, whereas the French event is held on clay, and Wimbledon is held on grass. The oldest tournament is Wimbledon, which was inaugurated in 1877, followed by the US Openin 1881, the French Open in 1891, and the Australian Open in 1905, but none of them have formally dubbed majors until 1925.