Tennis, one of the oldest of the modern sports, goes back as far as the 1500s, though the true modern game of "lawn tennis" goes back to the 1870s. The game primarily grew out of England, including the first Wimbledon Championships in 1877. The International Lawn Tennis Federation, now known simply as the International Tennis Federation, the sport's governing body, was founded in 1913, composed of 13 national tennis associations.
