Slow Pitch Rule Guides
Straight answers to the rule questions that stall adult slow pitch games — written for coaches, scorekeepers, and league directors running USSSA and GSL play.
USSSA vs GSL: rules compared
Side-by-side comparison of USSSA and GSL: home run limits, the DHH, bats, arc, base distance, courtesy runners, and run rules.
USSSA slow pitch rules
How USSSA adult slow pitch works: home run classifications, the excess-HR out, count, courtesy runners, and run rules.
GSL slow pitch rules
GSL specifics including the Designated Homerun Hitter (DHH), free home run after a DHH walk, and how the tag is lost.
Home run limits & IEO
Why leagues cap home runs, what an inning-ending out (IEO) is, and how to track limits without arguments.
Courtesy runner rules
Who can run, how many courtesy runners you get, and the out that gets called when a runner is used illegally.
Run rules & mercy rules
GSL DHH explained
Free for coaches
Want a live box score like this for your team?
Score slow pitch in seconds with USSSA and GSL rules built in, then share one link so every player, parent, and league can follow along.