Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The CMLL World Welterweight Championship is a professional wrestling championship promoted by the Mexican Lucha Libre wrestling-based promotion Consejo Mundial de Lucha Libre (CMLL) since 1992. Being a professional wrestling championship, it is not won legitimately; it is instead won via a scripted ending to a match or awarded to a wrestler because of a storyline. The official definition of the Welterweight weight class in Mexico is between 70 kg (150 lb) and 78 kg (170 lb), but is not always strictly enforced.