A team has finished a game with 12-15-5 runs-hits-errors line 10 times since 1897, most recently Birmingham Black Barons on 29 August 1949. That is about one every 44,300 team-games.
Box score for the most recent one ↗
12-14-5 12-14-3 12-14-1 12-14-6 12-14-0 12-15-2 12-15-5 12-15-1 12-15-4 12-15-3 12-15-6 12-15-0 12-15-8
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes