A team has finished a game with 12-20-4 runs-hits-errors line 2 times since 1897, most recently Cincinnati Reds on 24 June 1907. That is about one every 221,502 team-games.
Box score for the most recent one ↗
12-19-1 12-19-3 12-19-5 12-19-2 12-19-4 12-20-2 12-20-4 12-20-0 12-20-3 12-20-6 12-20-1 12-20-5 12-21-0
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes