The Mexican National Middleweight Championship(Campeonato Nacional de Peso Medio) is a national Mexican professional wrestling championship controlled by the Comisión de Box y Lucha Libre Mexico D.F. (Mexico City Boxing and Wrestling Commission). The official definition of the middleweight division in Mexico is from 82 kg (181 lb) to 87 kg (192 lb).[a] The championship was created in 1933 and promoted regularly until December 8, 2008. Empresa Mexicana de Lucha Libre (EMLL) had control of the championship from its creation until 1992,[b] at which point it was transferred to AAA.[c] The championship history between 1933 and 1937 is only partially known, with a period of times where it is unclear who held the championship. The first person to win the championship was Yaqui Joe, with records being unclear as to whom he defeated to win the championship. The last champion was Octagón, who had won the title on June 20, 2003, In early 2009, AAA stopped promoting all Mexican National Championships, opting to focus on their AAA branded championships.
There have been at least 62 championship reigns, with a total of 37 wrestlers having held the championship. El Santo and Octagón both held the championship four times each, setting a record for the Mexican National Middleweight Championship. The longest confirmed reign belonged to El Santo, his third reign lasted 1,758 days, spanning from May 31, 1956 to March 24, 1961.[d] In contrast, the shortest reign lasted 11 days, as Perro Aguayo held it from February 28, 1977 to March 11, 1977. As with all professional wrestling championships, matches for the Mexican National Tag Team Championship were not won or lost competitively, but by a pre-planned ending to a match, with the outcome determined by the CMLL bookers and match makers.[e] On occasion a promotion declared the championship vacant, which meant there was no champion at that point in time. This was either due to a storyline,[f] or real life issues such as a champion suffering an injury being unable to defend the championship,[g] or leaving the company.[h] All title matches took place under two out of three falls rules.[i]
^Comisión de Box y Lucha Libre (2001): "Articulo 242: Super Welter 82 kilos / Medio 87 kilos" ("Article 242: Super Welter 82 kilos / Middleweight 87 kilos")
^EMLL was renamed Consejo Mundial de Lucha Libre; CMLL in late 1991
^In this, "control" refers to the everyday use of the title, determining which storylines the title is being used it, who gets to challenge for the title, how to use it in a public relations sense.
^Due to gaps in the title history it's not clear if there was a longer reign
^Hornbaker (2016) p. 550: "Professional wrestling is a sport in which match finishes are predetermined. Thus, win/loss records are not indicative of a wrestler's genuine success based on their legitimate abilities – but on now much, or how little they were pushed by promoters"
^Duncan & Will (2000) p. 271, Chapter: Texas: NWA American Tag Team Title [World Class, Adkisson] "Championship held up and rematch ordered because of the interference of manager Gary Hart"
^Duncan & Will (2000) p. 20, Chapter: (United States: 19th Century & widely defended titles – NWA, WWF, AWA, IW, ECW, NWA) NWA/WCW TV Title "Rhodes stripped on 85/10/19 for not defending the belt after having his leg broken by Ric Flair and Ole & Arn Anderson"
^Duncan & Will (2000) p. 201, Chapter: (Memphis, Nashville) Memphis: USWA Tag Team Title "Vacant on 93/01/18 when Spike leaves the USWA."
^Comisión de Box y Lucha Libre p. 44 "Articulo 258.- Cada combate de lucha libre tendrá como limite tres caídas; cada caída será sin limite de tiempo, ganará quien obtenga dos caídas de las tres en disputa" ("Article 258.- Each wrestling match shall have as limit three falls; Each fall will be without time limit. The winner will be the one to first obtain two of the three falls in the match")