A team has finished a game with 6-6-3 runs-hits-errors line 74 times since 1897, most recently New York Mets on 14 September 2021. That is about one every 5,986 team-games.
Box score for the most recent one ↗
6-5-5 6-5-0 6-5-6 6-5-4 6-5-8 6-6-1 6-6-3 6-6-0 6-6-2 6-6-4 6-6-6 6-6-5 6-7-2
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes