A team has finished a game with 7-9-9 runs-hits-errors line 2 times since 1897, most recently Baltimore Orioles on 6 September 1901. That is about one every 221,502 team-games.
Box score for the most recent one ↗
7-8-9 7-8-6 7-8-7 7-9-2 7-9-1 7-9-4 7-9-9 7-9-3 7-9-0 7-9-5 7-9-6 7-9-7 7-9-8
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes