When was the first Wimbledon tennis tournament held?

Explanation

Wimbledon has been held since 1877 and is the world's oldest tennis tournament. It is one of tennis's four Grand Slam tournaments, but the only one still played on the sport's original surface, grass. Another "tradition" is the rain, which interrupts play every year. The tournament was moved from its original venue to the current grounds in 1922. Today, Centre Court is equipped with a retractable roof to protect against rain. The organization behind Wimbledon is called "The All England Lawn Tennis & Croquet Club", which was originally a croquet club.