Since its inaugural season, the MPBL has put regulations on team rosters as part of the league's intent to showcase local, homegrown talents. These regulations change over time to allow more players to join team rosters. As of 2023, these roster regulations are as follows:[1]
Teams must have a minimum of 15 players and a maximum of 24 players.
All local players are eligible to play in the league – naturally-born Filipino citizens.
Each team must have at least three homegrown players on the roster – local players who are native to their team's home locality.