Tennis recreational players and is also a popular worldwide spectator sport. The four Grand Slam tournaments (also referred to as the Majors) are especially popular: the Australian Open played on hard courts, the French Open played on red clay courts, Wimbledon played on grass courts, and the US Open also played on hard courts. Historians believe that the game's ancient origin lay in 12th century northern France, where a ball was struck with the palm of the hand. Louis X of France was a keen player of jeu de paume ("game of the palm"), which evolved into real tennis, and became
Basque pelota by men. This allows championship play at the international level, and allows the participation of players and teams from around the world using the same rules. There is, however, criticism about this, since purists might argue that some of the original traits of each particular modality could be lost. Even with protection, accidents do happen. With the ball easily travelling at , pelota can kill if safety equipment is not used properly or at all; while rare, occasional deaths do occur. The origin of this sport is tied to the decline of the ancient jeu de paume (jeu de paume