The Retro Sim Baseball League (RSBL) is an APBA-based retro baseball league founded in the summer of 2020.

RSBL started play with players from the 1901 MLB season; the goal is to play through all MLB seasons from 1901 forward with an empahsis on GM skills (drafting and trading). All regular season games are simmed in blocks; the playoff games are played live.

Interested in learning more? Please review the website and email the commissioner if you have any questions.