Their playoff run began with a sweep against Iloilo followed by a 2–1 series victory over Bacoor City.
[1][2] In the division finals against the Davao Occidental Tigers, Basilan would win game 1 against the reigning division champions on opposing grounds before the Tigers tied the series in game 2.
Following the one-year suspension due to the COVID-19 pandemic, game 3 was originally scheduled for March 10, 2021, but was postponed by a week due to a player being tested positive for the virus.
[3] By March 17, multiple members of the Basilan team had also been tested positive, thus the league decided to rule them out of the series, abruptly ending their season.
[4] Davao Occidental would eventually become champions in the national finals.