CMLL World Middleweight Tournament, 2021

The CMLL World Middleweight Championship was declared vacant on on August 10, 2021, when El Cuatrero left the promotion. On December 3, 2021, a tournament was started to crown a new champion. A seeding battle royal was hel, won by Soberano Jr. and Guerrero Maya Jr.. The quarterfinals and semifinals were also held on that day. The final match took place on December 10, 2021.

Espiritu Negro--------------
                      |Espiritu Negro-
Felino Jr.-          |
                                        |Templario-
Virus----------      |            |
                      |Templario---       |
Templario----                    
                                               |Soberano Jr.
[[Dragón Rojo Jr.]--------------                    
                      |Dragón Rojo Jr.----          
Star Jr.----------          |         |
                                      |Soberano Jr.--
Guerrero Maya Jr.--------- |
                      |Soberano Jr.--
Soberano Jr.---------