The first Wimbledon Tennis Championships starts.

On July 9, 1877, the All England Croquet and Lawn Tennis Club begins its first lawn tennis tournament at Wimbledon, then an outer-suburb of London. Twenty-one amateurs showed up to compete in the Gentlemen’s Singles tournament, the only event at the first Wimbledon. The winner was to take home a 25-guinea trophy.

Tennis has its origins in a 13th-century French handball game called jeu de paume, or “game of the palm,” from which developed an indoor racket-and-ball game called real, or “royal,” tennis. Real tennis grew into lawn tennis, which was played outside on grass and enjoyed a surge of popularity in the late 19th century.

In 1868, the All England Club was established on four acres of meadowland outside London. The club was originally founded to promote croquet, another lawn sport, but the growing popularity of tennis led it to incorporate tennis lawns into its facilities. In 1877, the All England Club published an announcement in the weekly sporting magazine The Field that read: “The All England Croquet and Lawn Tennis Club, Wimbledon, propose [sic] to hold a lawn tennis meeting open to all amateurs, on Monday, July 9, and following days. Entrance fee, one pound, one shilling.”

The All English Club purchased a 25-guinea trophy and drew up formal rules for tennis. It decided on a rectangular court 78 feet long by 27 feet wide; adapted the real tennis method of scoring based on a clock face—i.e., 15, 30, 40, game; established that the first to win six games wins a set; and allowed the server one fault. These decisions, largely the work of club member Dr. Henry Jones, remain part of the modern rules.