A team has finished a game with 6-18-3 runs-hits-errors line 7 times since 1897, most recently Atlanta Braves on 29 July 2003. That is about one every 63,286 team-games.
Box score for the most recent one ↗
6-17-2 6-17-3 6-17-1 6-17-4 6-17-0 6-17-5 6-18-3 6-18-1 6-18-0 6-18-2 6-18-6 6-18-4 6-19-1
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes