Expansion This season saw six expansion teams make their debut in the league. The
Nueva Ecija MiGuard join from
Central Luzon, while the
Mindoro Tamaraws and
Bicol Volcanoes became the first teams based in
Mimaropa and the
Bicol Region, respectively.
Western Visayas is the only region with two expansion teams in the
Bacolod Master Sardines and
Iloilo United Royals. The last expansion team was the
Soccsksargen Marlins representing the
Soccsksargen region. Despite the departure of the
Mandaluyong El Tigre, which marked the first time a team didn't return to compete, the number of participating teams increased from 26 to 31, currently the most for a single season in league history. Nueva Ecija was allocated to the North Division, with the other five expansion teams being placed in the South Division. To balance the divisions, the
Marikina Shoemasters,
Parañaque Patriots, and
Rizal Golden Coolers moved to the North Division.
Arenas ; Notes • During the latter part of the
2020–21 MPBL playoffs, all playoff games at the Subic Bay Gymnasium were held
behind closed doors due to the
COVID-19 pandemic in the Philippines.
Name changes • The
Cebu City Sharks changed their team name to
Cebu Sharks before the start of the season, then later as
Cebu Casino Ethyl Alcohol in October 2019 • The
Imus Bandera changed their team name to
Imus Khaleb Shawarma before the start of the season, then later as
Imus Bandera-Luxxe Slim in December 2019 • The
Laguna Heroes changed their team name to
Biñan City Krah Heroes before the start of the season, then later as
Biñan City Luxxe White in November 2019 • The
Navotas Clutch changed their team name to
Navotas Uni-Pak Sardines in June 2019 • The
Valenzuela Classic changed their team name to
Valenzuela SPVTOP Marketplace in June 2019, then later as
Val City-Carga Backload Solution in November 2019 • The
Nueva Ecija MiGuard changed their team name to
Nueva Ecija ForestLake in August 2019, then later as
Nueva Ecija Rice Vanguards in October 2019 • The
Soccsksargen Marlins-Armor On changed their team name to
Sarangani Marlins in November 2019
Coaching changes Roster regulation changes After receiving criticism for its previous set of changes, the player limits were increased to allow more players to join the league. • The Filipino-foreigner player limit was increased from one to two, with the height limit of 6'4" remaining intact. However, only one of them can play at a time. • The ex-professional player limit was increased from five to seven. However, only five of them can play at a time. ==Opening ceremony==