The MMDBL played three 54-game seasons — two in 2020 and one in 2021. The league went to 84 games in 2022 and to its current 90-game schedule in 2023. From 2020 through 2022 each league had two five-team divisions, with the top two in each division reaching the postseason. In 2023 the divisions were collapsed into two ten-team leagues and wildcards were introduced, expanding the field from four teams to six: the top two in each league earn a bye, the rest play a Wildcard Round, winners advance to the League Divisional Series, and LDS winners meet in the League Championship Series. LCS winners play in the World Series. Every playoff series has been seven games.
Because season lengths differ, season columns are split into 90-game and shorter seasons throughout, so a 54-game total is never silently compared with a 90-game one.
Not computable from the two compiled workbooks: . Streaks need game-by-game results and no-hitters need box scores; neither is in the season totals. Those remain manual until we pull game logs from the league site.