A team has finished a game with 8-18-6 runs-hits-errors line 2 times since 1897, most recently Cleveland Guardians on 7 June 1922. That is about one every 221,502 team-games.
Box score for the most recent one ↗
8-17-4 8-17-5 8-18-4 8-18-2 8-18-1 8-18-3 8-18-6 8-18-0 8-18-5 8-19-4 8-19-3 8-19-0 8-19-1
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes