A team has finished a game with 12-10-5 runs-hits-errors line 1 time since 1897, most recently Washington Senators on 14 October 1899. That is about one every 443,004 team-games.
Box score for the most recent one ↗
12-8-2 12-9-3 12-9-2 12-9-0 12-9-1 12-9-4 12-10-5 12-10-3 12-10-0 12-10-4 12-10-2 12-10-1 12-11-5
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes