Mercy Rules in College

[tucktheump]

2003 ncaa rule book

Rule 2: Definition of "Ten-Run Rule"

By conference rule, or mutual consent of both coaches prior to the contest, a game may be stopped only after seven innings if one team is ahead by at least 10 runs.

Each team must play an equal number of innings unless shortened because the home team needs none or only part of its half of the final inning.