A team has finished a game with 15-20-2 runs-hits-errors line 15 times since 1897, most recently Toronto Blue Jays on 22 August 2015. That is about one every 29,533 team-games.
Box score for the most recent one ↗
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 15-21-1 15-21-0
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes