How much is a mercy in baseball?

Answer 1

The "mercy rule" is only used in some leagues. There is no mercy rule in the MLB. My local Little League had a rule that if one team was up by more than 10 after the 4th inning, the game would be over and the team with the lead wins.

----------

15 after 3 innings, 10 after 4 innings, and 8 after 5 innings is also a commonly used "mercy rule" in some leagues.