Classifications drive everything
USSSA sorts adult teams into classifications based on skill and bat/ball performance. Your classification determines the home run allowance, the approved ball, and which bats are legal. Before your first game, confirm three things with your league director: the division classification, the home run limit, and the approved ball compression.
Home run limits and the excess-HR out
- Each team gets a set number of over-the-fence home runs per game (often 1–5 depending on classification).
- Once a team hits one past its limit, the batter is out. Most leagues also end the inning immediately and score no runs on the play.
- Some leagues instead use a one-up rule: a team may only go one home run above its opponent's total at any time.
- Balls hit over the fence that would have been caught but for fan interference, or that leave in fair territory on a bounce, are ground-rule doubles, not home runs.
This is the single most-miscounted rule in adult softball. Dugout Hero tracks each team's home run total live and blocks a home run that exceeds the limit, logging it as an inning-ending out instead.
The count, fouls, and the strike mat
- Batters typically start with a 1-1 count.
- One courtesy foul with two strikes is common; the next foul is an out.
- A pitch that lands on the mat (or plate extension) is a strike; arc requirements are usually 6 to 12 feet.
Run rules and time limits
Most USSSA league games run 7 innings or a time limit (commonly 55–70 minutes, finish the inning). Mercy rules typically trigger at 20 runs after 3, 15 after 4, and 10 after 5. Tournament pool play often adds a run cap per inning until the final inning, which is open.
Courtesy runners and substitutions
Courtesy runners are usually limited per inning and must be the player who made the last recorded out. Using an ineligible runner draws an out when appealed. See the courtesy runner guide for the full breakdown.
Scoring USSSA games without arguments
Pick the USSSA rule set in Dugout Hero when you create the game. Home run limits, the starting count, courtesy runner tracking, and mercy checks are enforced as you tap, and every rules event lands in a shareable recap so there's a record instead of a debate.
FAQ
How many home runs are allowed in USSSA slow pitch?
It depends on the classification your league plays. Recreational divisions commonly allow 1 to 3 over-the-fence home runs per team per game, while higher classifications allow more. Anything hit over the limit is ruled an out.
What is an inning-ending out in slow pitch?
When a team hits a home run past its allowed limit, the batter is declared out and, in most rule sets, the inning ends immediately with no runs scoring on the play.
What count do USSSA slow pitch games start with?
Most adult slow pitch games start each batter with a 1-1 count, and many leagues use one courtesy foul before a foul with two strikes is an out.
Rules summarized for convenience and updated periodically. Always follow the current official USSSA rulebook and your local league's supplements.