What are The BBCOR Baseball Bat Rules

Beginning with January 1, 2012, if your non-wood baseball bat does not bear the BBCOR certification mark then it is deemed illegal and is ineligible for play in adult baseball leagues. If you wish to play in your favorite league then you need to certify your bat as soon as possible.

What is the BBCOR Standard?

bbcor-baseball-bat-rule-learnBBCOR or Batted Ball Coefficient of Resistance standard replaced the previously used BSER standard. It regulates the trampoline effect or the amount of energy generated in baseball bats.

This standard was imposed by The National Federation of State High School Associations (NFHS) and National Collegiate Athletic Association (NCAA).

To make the non-wood baseball bats comparable to the wooden ones performance wise, BBCOR standard instructs that these bats should have a maximum BBCOR or “bounciness” of 0.5.

Mathematically BBCOR is calculated using inbound and rebound speeds of the ball that is thrown using ball cannon. Formula for BBCOR is

The number of homeruns and average scores has decreased since BBCOR standard has been implemented.

It is a common belief that the reduced energy produced by these BBCOR bats ensures pitcher safety and was one of the reasons behind the wide acceptability of the standard.


Each BBCOR bat should bear the BBCOR certification mark that is provided by NCAA. It should have a rectangular shape and should be placed on the barrel.

Hang on – If you plan on putting a BBCOR sticker, label or a decal on your non-certified baseball bat, then you might want to rethink as any such labels are strictly considered illegal.

Additionally, baseball bats with the old BESR standard certification stamp are not legal anymore and are not allowed to be used in BBCOR baseball leagues hosted by NCAA.

The association further provides that if you own a single piece bat made out of pure wood then you do not require BBCOR certification otherwise your bat is considered non-wood and it would need BBCOR certification. Examples of such non-wood bats include bamboo baseball bats.

There is a long list of BBCOR baseball bats that are approved by NCAA and NFHS. The list can be accessed here: http://www.mme.wsu-ssl.org/certifiedbaseballbats.aspx

One of the BBCOR rules set by NCAA states that tampering or altering with BBCOR baseball bats is strictly prohibited. In fact, such an act of artificially interfering with the performance of the bats is considered a federal crime!

Using bat warmers or any other methods to alter the temperature of the bat is also illegal.

BBCOR Baseball Bat Rules

Although baseball bats that bear the BBCOR certification mark are approved for play in NCAA and NFHS baseball leagues yet there are additional bat rules that a baseball bat should conform to.

Other than the 0.5 BBCOR, a BBCOR baseball bat should have a drop weight or a length to weight unit differential of -3 or less. So if intend to purchase a bat with a drop weight of -5, you might not even find it as such bats do not exist.

Moreover, the maximum barrel diameter allowed for BBCOR baseball bats is 2.625 inches.

Since the inception of BBCOR standard, a large number of manufacturers have adopted ways of producing baseball bats that are compliant with the latest standard.

DeMarini’s CF7, CF8, Easton’s Mako and Louisviller Slugger’s 915 are amongst the most popular BBCOR baseball bats.

So before you purchase your BBCOR baseball bat you should keep in mind all the rules that we have provided above. We hope that you will abide by the rules of the game and that you will give your best in your next baseball game!