A team has finished a game with 18-13-2 runs-hits-errors line 1 time since 1897, most recently Chicago White Sox on 20 June 1971. That is about one every 443,004 team-games.
Box score for the most recent one ↗
17-27-0 17-27-1 17-33-5 18-0-0 18-12-2 18-13-6 18-13-2 18-13-4 18-14-0 18-14-2 18-14-1 18-15-3 18-15-2
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes