A team has finished a game with 7-4-2 runs-hits-errors line 8 times since 1897, most recently Chicago Cubs on 4 July 2015. That is about one every 55,375 team-games.
Box score for the most recent one ↗
7-2-0 7-3-1 7-3-9 7-3-2 7-3-0 7-4-1 7-4-2 7-4-3 7-4-0 7-5-0 7-5-2 7-5-3 7-5-1
The whole distribution — Runs-Hits-Errors Lines · All 18 shapes