R.B.I. Baseball 21

Use 2 controllers and play one inning games. Keep a list of the 30 teams/stadiums so you don’t lose track and I suggest to do this at the same time as beating all 30 teams. Should take 30-45 minutes. Probably you will have picked up some of the stadiums doing other achievements so if you are super organized and kept a record you can just do this achievement last and save a few minutes.