A team has finished a game with 20-16-4 runs-hits-errors line 1 time since 1897, most recently Chicago Cubs on 25 May 1898. That is about one every 443,004 team-games.
Box score for the most recent one ↗
20-3-0 20-11-1 20-13-1 20-14-0 20-15-2 20-16-1 20-16-4 20-16-0 20-16-5 20-17-0 20-17-2 20-18-0 20-18-1
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes