[3] The club won the league championship in the playoff by defeating Bayamón FC in the final at the Juan Ramón Loubriel Stadium.

[12] In August 2020 the club announced the signing of all-time leading scorer for the Puerto Rico national team Hector Ramos.

[13] Because no 2020/21 season was held in Puerto Rico, Metropolitan FA was still the nation's reigning champion, thus qualifying the team for an expanded 2021 Caribbean Club Championship which kicked off in May 2021.

[14] In preparation for the tournament, the club played two friendly matches against San Cristóbal FC of the Primera División de Republica Dominicana at the Félix Sánchez Olympic Stadium in March 2021.

[15][16] In the second match, the Puerto Rican side earned a 1–1 draw with Hector Ramos scoring Metropolitan's first-ever goal against an international opponent.

[23] By advancing the semi-finals, Metropolitan FA secured a place in the preliminary round of the 2021 CONCACAF League,[23] becoming the first-ever team from Puerto Rico to qualify for the tournament.

[25] In preparation for the series, the club signed former French youth international Jordan Barbara[26] and Puerto Rican striker Ricardo Rivera.