A team has finished a game with 16-2 runs on that many hits 1 time since 1897, most recently Chicago American Giants on 19 August 1939. That is about one every 443,004 team-games.
Box score for the most recent one ↗
13-1 14-0 14-1 14-2 15-0 16-0 16-2 16-4 17-0 18-0 19-0 20-0 20-3