AAU 14U and older bat rules (2027)
The rule for 2027
Bats must carry the BBCOR stamp. Barrel 2 5/8" max. Drop -3 or heavier.
Source: aausports.org · checked Oct 23, 2026
| Stamp | BBCOR |
|---|---|
| Max barrel | 2 5/8" |
| Max length | — |
| Drop limit | -3 or heavier |
| Ages | 14–18 |
"BBCOR drop 3." AAU's page doesn't mention wood; check with your event.
What the stamps mean
- BBCOR .50 mark: The high school and college standard: -3 drop, barrel up to 2 5/8", 36" max. BBCOR bats made before USA BBCOR stay legal in high school indefinitely, but the NCAA requires the new USA BBCOR mark from Jan 1, 2029. Official list.
What size bat for 14U and older?
Height and weight matter more than age. These are typical sizes for an average-size player, from the Rawlings/Easton sizing chart and CDC growth charts. For your player's exact size, use the Bat Finder for 14U and older.
| Age | Typical length | BBCOR drop |
|---|---|---|
| 14 | 31"–33" | -3 |
| 15 | 32"–33" | -3 |
| 16 | 32"–33" | -3 |
| 17 | 33" | -3 |
| 18 | 33"–34" | -3 |
Shop bats for 14U and older
These links open bats with the right stamp. Check the exact model against the official list before you buy. We earn a commission if you buy, at no cost to you.
BBCOR bats
Playing college ball in 2029 or later? Those players will need the new USA BBCOR mark, which reaches stores July 1, 2027.
Other Other travel organizations divisions
- Game Day USA 8U–12U (Ages 7–12)
- Game Day USA 13U (Age 13)
- Game Day USA 14U (Age 14)
- Game Day USA 15U and up (Ages 15–18)
- 13U and younger (Ages 6–13)
This page summarizes the published rule. Your league or tournament can add its own, and its ruling is final. Confirm your bat isn't on a decertified or non-approved list before you buy. More bat questions.
Not sure what to buy?
The free Bat Finder gives you the length, the drop and the stamp your league requires in about 20 seconds.
Open the Bat Finder