 It's July 9th, the greatest day ever. On the 9th of July, 1877, the All-England Croquet and Lawn Tennis Club begins the first tennis tournament at Wimbledon. You can't be serious, man. What do you know? It's three-time Wimbledon champion John McEnroe. You cannot be serious! Well, John, it's true. The first Wimbledon tournament took place on this date in 1877. Answer my question!