Tennis is a racket sport, which started in 1859 as lawn tennis as it started to spread through the upper-class English-speaking population before spreading all around the world. The governing body is the International Tennis Federation. The first tournament of the post-doomsday era was held in 2012, and was open to Cleveland - the host - Northumbia, the Celtic Alliance and other European survivor states so that it could work to expand the sport back into its pre-doomsday form.