A team has finished a game with 15-20-3 runs-hits-errors line 8 times since 1897, most recently Kansas City Athletics on 21 April 1956. That is about one every 55,375 team-games.
Box score for the most recent one ↗
15-19-2 15-19-5 15-19-1 15-19-3 15-20-0 15-20-1 15-20-3 15-20-5 15-20-2 15-20-4 15-21-2 15-21-3 15-21-4
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes