Baseball - Bat Guidelines (Ancaster Minor Baseball Association)

PrintBaseball - Bat Guidelines
Updated February 2024
Latest Available


The maximum legal diameter for bats shall be 2 3/4".
Subject to the following, in addition to wooden bats, metal bats shall be allowed in Rep play.
For all 12U and 13U play, metal bats with (i) a 1.15 BPF (Bat Performance Factor) or (ii) USA Baseball Model is permitted.
For this division using up to a minus 10 length/weight differential is permitted.

For 14U and 15U play, wood bats and non-wood bats may be used. Only non-wood bats with a length-to-weight differential of -5 or less are permitted.

For all levels of play 16U and above, only wood, wood composite, and wood-like material bats are permitted. Wood composite bats include wood or bamboo bats with fiberglass sheathing and wood-barrelled bats with composite handles. Wood composite bats do not include any bat that has any metallic component.


18U & 22U levels will use wood or wood composite bats only. 

In 15U minus 5 aluminum bats are allowed. Bat Barrels are limited to 2¾ inches. No other restrictions are in effect.

Where metal bats are permitted, Baseball Ontario allows the use of BESR certified bats and BBCOR certified bats in Baseball Ontario play, and to accept the NCAA's list of BBCOR certified bats and the NFHS’s list of BESR certified bats, with the understanding the lists may be modified from time to time. Solid wood bats are always approved for Baseball Ontario play. For the purposes of the OBA Bat Rule, bamboo bats are wood bats; and composite wood bats are wood bats. Metal/wood bats are not considered wood bats and cannot be used at 14U and above. Hollow aluminum alloy bats (Class A in the lists) are only allowed for Baseball Ontario play at 13U and below. 
Please visit the NCAA web site for the list of BESR certified bats (Approved Bats List)