The earliest such tournament was in 1998 part of the Arena Naucalpan 21st Anniversary Show and saw Mega defeat Judo Suwa, forcing the Japanese wrestler to have his hair shaved off. Most of the "Ruleta de la Muerte" tournaments have followed the traditional "lucha libre" format, except for the April 2015 "Ruleta de la Muerte" show, where it instead was a four-man steel cage match instead. 2015 saw a second "Ruleta de la Muerte" tournament, where Diva Salvaje and Toscano defeated Danny Casas and X-Fly, after which Danny Casas pinned X-Fly to force X-Fly to be shaved bald as a result. Promoter Adolfo Moreno had promoted "Lucha Libre", or professional wrestling in Naucalpan, State of Mexico, Mexico prior to financing the building of Arena Naucalpan that opened in late 1976. Originally Moreno worked together with the Universal Wrestling Association (UWA) and then later Consejo Mundial de Lucha Libre (CMLL) as a local promoter. On January 1, 1996 Moreno created International Wrestling Revolution Group (IWRG) as an independent promotion. IWRG celebrates the anniversary of Arena Naucalpan each year in December with a major show, making it the second oldest, still promoted show series in the world. pre-dating WrestleMania by eight years. Only the CMLL Anniversary Show series has a longer history. The December 17, 2019 Arena Naucalpan show marked the 42nd Anniversary of Arena Naucalpan. The "La Ruleta de la Muerte Máscaras" show featured seven professional wrestling matches with different wrestlers involved in pre-existing scripted feuds, plots and storylines. Wrestlers were portrayed as either heels (referred to as "rudos" in Mexico, those that portray the "bad guys") or faces ("técnicos" in Mexico, the "good guy" characters) as they followed a series of tension-building events, which culminated in a wrestling match or series of matches.