A team has finished a game with 15-15-4 runs-hits-errors line 10 times since 1897, most recently Tampa Bay Rays on 25 June 2008. That is about one every 44,300 team-games.
Box score for the most recent one ↗
15-14-3 15-14-0 15-14-1 15-14-7 15-15-3 15-15-1 15-15-4 15-15-0 15-15-2 15-15-5 15-16-2 15-16-3 15-16-0
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes