A team has finished a game with 5-18-1 runs-hits-errors line 7 times since 1897, most recently Cincinnati Reds on 4 April 2001. That is about one every 63,286 team-games.
Box score for the most recent one ↗
5-17-5 5-18-3 5-18-9 5-18-4 5-18-2 5-18-0 5-18-1 5-19-4 5-19-2 5-19-3 5-19-1 5-19-0 5-20-3
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes