A team has finished a game with 18-16-1 runs-hits-errors line 5 times since 1897, most recently Texas Rangers on 4 July 2004. That is about one every 88,600 team-games.
Box score for the most recent one ↗
18-15-2 18-15-0 18-15-1 18-16-0 18-16-2 18-16-3 18-16-1 18-17-0 18-17-1 18-17-3 18-17-2 18-18-3 18-18-4
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes