He made his CMLL debut on August 8, 2009, teaming up with Sensei to defeat "Los Romanos" (Caligula and Messala) in the opening match of CMLL's Saturday Night show in Arena México. In late 2009 CMLL vacated the Mexican National Trios Championship when Black Warrior, who was 1/3 of the championship team left CMLL. As a result, they held an eight-team elimination tournament to crown new champions. Delta teamed up with Leono and Valiente for the tournament. In their first match as a trio the team defeated Diamante, Pegasso and Rey Cometa, but lost to "Poder Mexica" (Sangre Azteca, Dragón Rojo, Jr. and Misterioso II) in the second round. In April, 2010 Delta participated in the 2010 "Torneo Gran Alternativa" ("Great Alternative Tournament"). The "Gran Alternativa" tournament is an annual CMLL tournament that teams a veteran and a rookie ("Novato") up for a tag team tournament. Delta was placed in "Block B" and teamed up with the Veteran Volador Jr. When the "rúdo" (bad guy) team of Pólvora and Héctor Garza won block B several sources stated that Delta and Volador Jr. were the favorites to win Block B. On March 23, 2010 Delta and Volador Jr. defeated Tiger Kid and El Felino in the first round and Raziel and Averno in the second round. In the final round of Block A the team faced Puma King and Último Guerrero. Delta's partner Volador Jr. was eliminated first leaving Delta to face both opponents. In a match that helped showcase Delta's talent he eliminated both Puma King and Guerrero to qualify for the finals of the "Gran Alternativa" tournament. The finals took place on the April 30, 2010 Super Viernes, where Delta and Volador Jr. were defeated by Pólvora and Héctor Garza. In November 2010 Delta was entered into an online poll to determine a new one third of the Mexican National Trios Champions, after Máscara Dorada had relinquished his part of the title. On December 20, 2010, CMLL announced that Delta had defeated Ángel de Oro and Diamante in the poll and named him new Mexican National Trios Champion, alongside Metro and Stuka, Jr. On January 9, 2011, Delta, Metro and Stuka, Jr. lost the Mexican National Trios Championship to Ángel de Oro, Diamante and Rush.