Distributions from AAA From TaxAlmanac, A Free Online Resource for Tax Professionals Note: You are using this website at your own risk, subject to our Disclaimer and Website Use and Contribution Terms.
As of 2008 the circumference of a regulation size baseball is between nine and nine and a quarter inches which converts to between about 7.3 cm and 7.5 cm in diameter according to the official rules of Major League Baseball (MLB).
In high school baseball in the United States: 1  The bat is not permitted to be more than 25â8 inches (67 mm) in diameter. 2  Its drop (inches of length minus ounces of weight) must be no more than 3: for example, a 34âinch (863.6âmm) bat must weigh at least 31 ounces (880 g).