The Torneo Guardianes 2021 (stylized as Guard1anes) Liga MX final phase was played between 8 May 2021 to 30 May 2021. A total of 12 teams competed in the final phase to decide the champions of the Guardianes 2021 Liga MX season. For the second straight season, an additional qualifying round, the reclassification or repechaje, was employed, which expanded the number of playoff spots to 12.
Both finalists qualified to the 2022 CONCACAF Champions League.
The following teams qualified for the championship stage.
In the following tables, the number of appearances, last appearance, and previous best result count only those in the short tournament era starting from Invierno 1996 (not counting those in the long tournament era from 1943âÂÂ44 to 1995âÂÂ96).
Matches took place on 8âÂÂ9 May 2021. <section begin=RP />
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The following was the final seeding for the final phase. The winners of the Reclassification matches were seeded based on their position in the classification table.
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The first legs were played on 12âÂÂ13 May, and the second legs were played on 15âÂÂ16 May. <section begin=Quarter-finals />
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1âÂÂ1 on aggregate and tied on away goals. Puebla advanced due to being the higher seed in the classification table.
Cruz Azul won 4âÂÂ3 on aggregate.
Santos Laguna won 3âÂÂ2 on aggregate.
5âÂÂ5 on aggregate. Pachuca won on away goals.
The first legs will be played on 19âÂÂ20 May, and the second legs will be played on 22âÂÂ23 May. <section begin=Semi-finals/>
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Cruz Azul won 1âÂÂ0 on aggregate.
Santos Laguna won 3âÂÂ1 on aggregate.
The first leg was played on 27 May, and the second leg was played on 30 May. <section begin=Finals/>
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Cruz Azul won 2âÂÂ1 on aggregate.