Starting as far back as at least 2000, the Mexican wrestling promotion International Wrestling Revolution Group (IWRG; Sometimes referred to as Grupo Internacional Revolución in Spanish) has held several annual events where the main event was a multi-man steel cage match where the last wrestler left in the cage would be forced to either remove their wrestling mask or have their hair shaved off under Lucha de Apuestas, or "bet match", rules. From 2012 IWRG has promoted a variation of the steel cage match under the moniker Prisión Fatal ("Deadly Prison") at least once a year since its inception. The Prisión Fatal has the added twist that each competitor is chained by the wrist to the cage with a long steel chain and to escape they fight have to get a key to unlock their chain before they are able to escape. The added chain helps to distinguish it from other Steel cage matches held throughout the year such as the IWRG Guerra del Golfo ("Gulf War"), IWRG Guerra de Sexos ("War of the Sexes") or IWRG El Castillo del Terror ("The Tower of Terror") shows. The Prisión Fatal shows, as well as the majority of the IWRG shows in general, are held in "Arena Naucalpan", owned by the promoters of IWRG and their main arena. The July 2017 Prisión Fatal show was the eight time that IWRG promoted a show under that name and the second time in 2017, after a Prisión Fatal show in January.
