the championship's history. Los Guerreros Laguneros (2011–present) Guerrero and Atlantis faced each other in a big grudge match on September 23, which saw Atlantis pick up the win. In July 2012, Guerrero officially fired Rey Escorpión from Los Guerreros del Infierno, and named Euforia and Niebla Roja as his replacements. On the August 3 Super Viernes show, Guerrero and Rojo Jr. lost the CMLL World Tag Team Championship to Atlantis and Diamante Azul, ending their reign at 640 days, the longest reign in the title's history. In early 2013 the long-running feud between Atlantis and Último Guerrero came to the forefront of CMLL booking once more. The two were booked for the 2013 Torneo Nacional de Parejas Increibles tournament, forcing the two rivals to team up. Before their qualifying round both Atlantis and Gurrero stated that they would put their differences aside for the sake of the tournament. Atlantis and Guerrero displayed the teamwork they had developed by being partners in Los Guerreros de la Atlantida for several years as they defeated the teams of Valiente and Pólvora, Diamante Azul and Euforia and finally Dragón Rojo Jr. and Niebla Roja to qualify for the finals of the tournament. The finals took place as part of the 2013 Homenaje a Dos Leyendas show and saw La Sombra and Volador Jr. win the match and the tournament. Following the loss a frustrated Atlantis attacked Último Guerrero and tore his mask apart. Atlantis subsequently made a Luchas de Apuestas challenge to Último Guerrero that was not immediately accepted. The two rivals officially signed the contract for the mask vs. mask match on March 21, but did not announce an actual date for the match. The act of signing a Luchas de Apuestas match between two of the top-ranked CMLL workers without announcing a specific date has let people to speculate that it would take place at the CMLL 80th Anniversary Show in September, 2013. During the celebration of Atlantis' 30th anniversary as a wrestler Guerrero appeared after a match to berate Atlantis, which turned out to only be a distraction for the real Último Guerrero to attack Atlantis from behind. The two identically dressed Guerreros proceeded to beat up Atlantis and tear his mask apart. Following the match Último Guerrero introduced his brother "Gran Guerrero". It was not verified if Gran Guerrrero actually is the brother of Último Guerrero, someone not related to