http://www.dearbornfordcenter.com/gym/softball_rules.htm
baseball
The 10-run mercy rule is invoked at the end of the half-inning when the home team is leading and at the end of the complete inning when the visiting team is leading (after a minimum of 4 1/2 or 5 innings).
The 20-run travesty rule is invoked at the end of the half-inning when the home team is leading and at the end of the complete inning when the visiting team is leading (after a minimum of 2 1/2 or 3 innings).
**************************
http://www.boomersoftball.com/Rules.htm
slow pitch softball
A. The top 25% of teams playing in State Tournaments are automatically moved up one class the following year.