Manuel began his wrestling career in early 2002 on the independent circuit. In 2006, Saez began wrestling for Revolucion Lucha Libre under the ring name as Xtra Large. He would compete on the lower card in singles competition, but eventually formed a tag team with Bunny. On April 30, 2006, XL and Bunny defeated Coyote 2.0 and Pensacola to win the RLL Tag Team Championships. In XNL, Saez defeated Giger to win the XNL World championship after feuding with Giger on previous shows. In 2013 he represented Chilean promotion Xplosion Nacional de Lucha in the first ever Torneo Latino Americano de Lucha Libre, in São Paulo, Brazil. He was defeated in the first round by Pro Wrestling Noah's Takeshi Morishima. In 2015, Saez, along with Ariki Toa, Lenko Sins, Solar Sanchez, Domina and Sergio Catalan, formed a stable named L.A.D. within the Xtreme Latin American Wrestling promotion in Chile. The stable has disbanded as of 2016. On March 5, 2017 at a CNL Chile event, Saez defeated Engranaje Jack for his first and only CNL Metropolitan Championship in the promotion.
Pro Wrestling Noah (2014, 2016–present)
Saez made his Japanese debut on January 15, 2014, as XL, where he was defeated by Akitoshi Saito. He would also briefly tag with Bobby Fish. Saez returned to the promotion as part of the Global League, finishing the tournament with 6 points. On November 3, 2016, Saez defeated Davey Boy Smith, and on January 7, 2017, Saez defeated Hi69.
WWE Cruiserweight Classic (2016)
In June 2016, WWE announced Saez as one of the 32 participants in the WWE Cruiserweight Classic tournament. In the first round of the tournament, Saez was eliminated by Gran Metalik. Saez was the first and only Chilean wrestler to compete in WWE. Saez was the heaviest wrestler in the tournament, at 205 pounds, which is the weight limit of a cruiserweight. For Saez to make the tournament, he fasted and trained to shred 25 pounds, as before this he was 230 pounds. Alejandro stated that this took him 2 weeks to accomplish. In 2018, Saez announced that had been selected among the 45 selected from all Latin America to participate in the first Tryout of Latin Americans of the WWE, which were done from 2 to 4 December in Santiago.
5 Luchas Clandestino (2017–present)
In 2017, Saez returned to Santiago de Chile to wrestle in the independent scene of the country. He started to run his own promotion and wrestling training center called "5 Luchas Clandestino". Currently he is the leader of a new wrestling faction called "Carnaval de Sangre", with "Sexualizer", "Kristy", "Carnicero Humano" and "Azagoth Firelord". Some of the other wrestlers are Zatara, who participated in the Mae Young Classic and Guanchulo who was part of DDT Pro-Wrestling along with Saez.
