A team has finished a game with 7-7-6 runs-hits-errors line 5 times since 1897, most recently St. Louis Cardinals on 8 September 1976. That is about one every 88,600 team-games.
Box score for the most recent one ↗
7-6-0 7-7-3 7-7-1 7-7-0 7-7-2 7-7-5 7-7-6 7-7-4 7-7-8 7-8-3 7-8-2 7-8-1 7-8-5
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes