A team has finished a game with 9-21-1 runs-hits-errors line 7 times since 1897, most recently Pittsburgh Pirates on 1 July 2015. That is about one every 63,286 team-games.
Box score for the most recent one ↗
9-20-2 9-20-7 9-20-1 9-20-3 9-20-4 9-20-0 9-21-1 9-21-2 9-21-0 9-21-4 9-21-5 9-22-3 9-22-5
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes