A team has finished a game with 15-21-0 runs-hits-errors line 26 times since 1897, most recently Boston Red Sox on 4 May 2019. That is about one every 17,038 team-games.
Box score for the most recent one ↗
15-20-2 15-20-4 15-21-2 15-21-3 15-21-4 15-21-1 15-21-0 15-22-1 15-22-6 15-22-3 15-22-2 15-22-0 15-23-0
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes