A team has finished a game with 7-6-7 runs-hits-errors line 1 time since 1897, most recently Boston Braves on 27 April 1903. That is about one every 443,004 team-games.
Box score for the most recent one ↗
7-5-5 7-6-1 7-6-3 7-6-4 7-6-2 7-6-5 7-6-7 7-6-0 7-7-3 7-7-1 7-7-0 7-7-2 7-7-5
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes