I noticed that the player was injured, but still starting some games. He was credited for playing 10 defensive innings total in 6 games, but never went to the plate, and is not in the box score or game log.
The game didn't crash until he came back from his injury, then he somehow was getting credit for playing for two teams at the same time
My best guess is that there are other injured players that may be causing this, but really I don't have any idea.