A team has finished a game with 15-14-3 runs-hits-errors line 7 times since 1897, most recently New York Mets on 27 June 2008. That is about one every 63,286 team-games.
Box score for the most recent one ↗
15-13-2 15-13-0 15-13-4 15-13-5 15-14-2 15-14-4 15-14-3 15-14-0 15-14-1 15-14-7 15-15-3 15-15-1 15-15-4
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes