USSSA age divisions explained

Every tournament listing is built out of divisions (10U AA, 12U Open, 14U C), and the two-part code answers two different questions: how old (10U) and how competitive (AA). Here's how to read both, and the fill dynamics that decide whether your division still has a spot.

The age number: “U” and the cutoff date

“10U” means 10-and-under, but under as of a cutoff date, not as of the tournament. Your player's age on the cutoff sets their division for the whole season, no matter when their birthday falls. USSSA baseball and USSSA fastpitch use different cutoffs, so the same child can be in different age groups in the two sports.

Two practical consequences:

• Playing up is allowed; playing down mostly isn't. Both sports let a player join an older team. Baseball caps it at two years up through 14U (a 10U player can be on an 11U or 12U team). The only way to play down is baseball's grade exception, and only to the group that matches the player's grade.
• A team plays at the age of its oldest player. Every player has to be eligible for the division (grade exceptions aside), so a “10U team” may be mostly 9-year-olds.

The class letter: how competitive

The second half of a division name grades competitiveness, so first-year teams aren't facing national-circuit programs. The two sports use different ladders:

• Baseball: USSSA's four tournament classes, top to bottom, are Major, AAA, AA, and A. In our listings AA is the most common class label after Open.
• Fastpitch: team classes are A, B, and C, plus Rec/All-Star; USA Elite Select runs its own national events. B and C divisions (“12U C,” “10U B”) are common in fastpitch listings.
• Open: the label on 54% of the divisions we list. It isn't one of the class tiers; an Open division isn't limited to a single class.

Your team's class is assigned by your state's USSSA director. In baseball it's based on power ratings and tournament results: USSSA Texas Baseball's guidelines put roughly the top 10–15% of the state's teams in Major. A returning team starts the season at last season's class or higher, and teams can be reclassified mid-season. Classification is a judgment call, and enforcement leans on coaches: USSSA's own Texas page concedes “not everyone will agree with classifications” and asks teams to check opponents' rosters.

A useful rule when a tournament runs more than one class: if your team is winning comfortably at its level, you'll develop faster (and get honest games) one tier up.

What divisions look like in the real data

From the 9,381 divisions across 1,013 upcoming events we track in eight states:

• A typical division caps at 12 teams (half cap between 8 and 12).
• Divisions fill early, and the good ones fill very early: 518 divisions are already full as of October 13, 2026, 211 of them for events more than a month away and 66 for events more than two months out. “We'll register after practice starts” is how teams end up on waitlists.
• Entry fees rise with age: median $210 at 6U–8U, $289 at 9U–12U, $375 at 13U–18U, because game length, field size, and umpire costs rise too (entry fees explained).

This is why every event page here shows fill per division. 8/10 teams with “+2 this week” tells you to register today; 2/10 a fortnight out tells you to ask the director whether the division will consolidate.

Reading a listing like a coach

“12U AA · $250 · 3GG · Pool to Single Elim · 9/10 filled” decodes as: twelve-and-under (by the cutoff), AA class (lower-middle of baseball's four), $250 per team, three games guaranteed, pool play seeding a single-elimination bracket, and one spot left. Register now or pick another weekend. What that weekend costs beyond the entry fee is in the true cost of a tournament weekend.

Browse by age group

Every state page filters by age. Jump straight to your player's division: