Negro Leagues
From NSB User Guide
Handling Negro League Players
Version 7.0 adds every stat line for every player between 1920 - 1948 for the seven Negro Leagues recognized by MLB as major leagues. Even though we won't be simulating Negro league teams as such due to their erratic and sparse schedules, adding every player's stats (1) makes possible a complete league normalization profile for accurate adjustments, and (2) offers the possibility of accurate career (CAR) stats for reliable Career Mode simulations.