A team has finished a game with 7-7-5 runs-hits-errors line 10 times since 1897, most recently Boston Red Sox on 15 April 1966. That is about one every 44,300 team-games.
Box score for the most recent one ↗
7-6-7 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
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes