AABC Griffey (15U), Mantle (16U), Mattingly (17U), Connie Mack (18U) & Stan Musial bat rules (2027)
| Stamp | Wood |
|---|---|
| Max barrel | — |
| Max length | 42" |
| Drop limit | — |
| Ages | 15+ |
Wood only. The only composites allowed are the Baum Bat and the Zinger composite. The handbook lists a 2.61" max diameter.
What the stamps mean
- one-piece solid wood: One-piece solid wood is legal almost everywhere without a stamp. Multi-piece, laminated, bamboo and composite-wood bats usually do need a certification mark.
What size bat for Griffey (15U), Mantle (16U), Mattingly (17U), Connie Mack (18U) & Stan Musial?
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 Griffey (15U), Mantle (16U), Mattingly (17U), Connie Mack (18U) & Stan Musial.
| Age | Typical length |
|---|---|
| 15 | 32"–33" |
| 16 | 32"–33" |
| 17 | 33" |
| 18 | 33"–34" |
Shop bats for Griffey (15U), Mantle (16U), Mattingly (17U), Connie Mack (18U) & Stan Musial
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.
Other AABC divisions
- Clemente (8U) through Nolan Ryan (13U) (Ages 7–13)
- Sandy Koufax (14U) (Age 14)
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.
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