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CAA Baseball strongly encourages parents and youth athletes to choose the bat that is the right size and weight for each athlete. Using a bat that is too long or heavy can drastically affect swing mechanics and therefore, batting outcomes. If you have questions about what bat size your son should be using, please talk to a CAA Baseball coach.

2018 Bat Rules

Metro Baseball League (MBL) and Metro Baseball Tournaments (MBT) issued revised bat rules for the upcoming 2018 baseball season.  As MBL governs league play for our 12, 13, 14, and 15 year old metro teams and MBT governs tournament play for our 9, 10, and 11 year old tournament teams, the MBL and MBT bat rules impact CAA Baseball bat rules.

In order to try out and play as a member of CAA baseball in 2018 you will need to use a bat that complies with the following standards:


Bat restrictions:  9U-14U: All bats must have the new USA stamp (unless using a -3 BBCOR bat or wood bat). 15’s can use a BBCOR bat or wood bat.

9-U, 10-U, 11-U,
12-U, 13-U

Bats must be 2 1/4" with unlimited weight differential or bats 2 5/8" and have a -11 differential or less meaning -10, -9 etc. NOT -12, -13, etc. (i.e. 31” – 20.0 oz.)


Bats must be 2 5/8" with a -5 or less differential or a -3 BBCOR bat.


Bats must be 2 5/8” with a -3 or less differential and must be a BBCOR bat.



A safe and easy way to find a new bat is to reference the approved bat list from USA Baseball at https://usabat.com/   

When shopping, look for the USA Baseball stamp as pictured below.