The CMLL Torneo Nacional de Parejas Increíbles 2018 or "National Incredible Pairs Tournament 2018" is a tag team Lucha Libre tournament held by the Mexican wrestling promotion Consejo Mundial de Lucha Libre (CMLL). The tournament is based on the Lucha Libre Parejas Increíbles match concept, which pairs two wrestlers of opposite allegiance, one portraying a villain, referred to as a "rudo" in Lucha Libre wrestling terminology, and one portraying a fan favorites, or "técnico". The 2018 version of the tournament was the ninth time in a row that CMLL held the tournament since the first tournament in 2010. The winners are presented with a trophy but not given any other tangible reward for the victory.

William Arturo Muñoz González is a Mexican luchador, known under the ring name Rush. He is currently signed to AEW. He is best known for his time performing for the Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) as well as the U.S. based Ring of Honor (ROH). Muñoz's father, Arturo Muñoz, is also a professional wrestler, most recently known under the ring name La Bestia del Ring. William's younger brothers are also professional wrestlers, using the ring names Dralístico and Dragon Lee. While most luchadors portray clear heroes or villains in the ring, Rush portrays a character that straddles that divide; his in-ring actions are often chaotic or brawling, with tendencies to cheat, but he is still popular with fans.