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DeMarini Baseball Bats and Softball Bats Guides

BASEBALL BATS

Baseball bat sizing charts on this site are generalized and your league rules should be checked when choosing a bat.

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Youth Little League Bats allow for a bat with a barrel size up to 2 ¼" in diameter and usually range in drop from (-10) to (-13).

Little League ( 8 - 10 years old)
Player Height	Bat Weight
4' to 4' - 2"	16-17 oz
4' 3" to 4' 6"	17-18 oz.
4' 7" to 4' 11"	18-19 oz.
5' and over	19-20 oz.

Senior Little League Bats are many times referred to as "Big Barrel Bats". A Senior Little League bat allows a 2 ¾" diameter barrel and a (-8) to (-10).

Youth Senior Little League ( 11 - 12 years old)
Player Weight (pounds)	Bat Weight
70 - 80	18-19 oz.
81 - 100	19-20 oz.
101 - 120	20-21 oz.
121 - 140	21-22 oz.
141 +	22-23 oz.

The typical Transition Bats, as in Babe Ruth League, allow a 2 ¾" barrel diameter and are between (-5) and (-8) drop. These Bats are many times referred to as "Big Barrel Bats". Transitional bats can also be used between the Senior Little League and the High School League for a player to develop strength and confidence. Some Youth Little League Transitional Bat are designed for the transition between Youth Little League and Senior Little League for the larger than normal Little League player and can be referred to as the "Power Hitter" bat. "Power Hitter" bats are still a 2 ¼" barrel diameter used for Youth Little League.

Age (years old)	5 - 7	8 - 9	10	11 - 12	13 -14	15 - 16
Bat Length (inches)	24" - 28"	27" - 29"	28" - 30"	30" - 31"	31" - 32	32" - 33"

High School / College Baseball Bat play allows only (-3) drop with a 2 5/8" barrel. High School and Collegiate Baseball Bats also have to be BESR certified. BESR is "Ball Exit Speed Rating", and is a term used by the NCAA to rate the performance of baseball bats.

High School / College
Player Height	Bat Weight
5' 6" to 5' - 8"	27-28 oz.
5' 9" to 6'	28-29 oz.
6' 1" to 6' 4"	29-30 oz.
6' 5" and over	30-31 oz.

SOFTBALL BATS

Fastpitch Bats and Slowpitch Bats are different and if you should check with your league before buying or using one.

Most leagues will accept an ASA Certified bat since the ASA certification sets strict requirements as far as BPF. Bat Performance Factor (BFP) is determined by firing a ball at a high rate of speed at a stationary bat. If the ball comes off the bat 20% faster than it was fired at the bat, then it exceeds BFP 1.20. The BFP rating system is the standard used by many leagues to determine a standard by which bats are approved or non- approved for that league.

The rating system that developed from the Bat Performance Factor:

98 MPH : Meets ALL Association rules as of today, including the new 2004 ASA Bat Rule. Bats must test lower than 98 MPH to pass the new 2004 ASA bat testing standard and can be stamped with a 2000 or 2004 ASA marking. These bats also meet the 1.20 BPF standard used by the USSSA, NSA, ISF and other associations.

100 MPH : Meets ALL Association rules as of today. Manufacturers stopped production of these models on June 30, 2004. However, players may continue to use these models indefinitely in accordance with ASA's license agreement with the bat manufacturers. These bats will only be stamped with the ASA 2000 marking. These bats also meet the 1.20 BPF standard used by the USSSA and ISF. Check with the association you play under for specific rulings.

100+ MPH : These bats are not ASA approved. DOES COMPLY with Most Other Major Softball Association Bat Performance Standards in effect as of January 1, - USSSA, NSA, ISA, SSUSA, & ISF. 1.20 BPF Certified. Check with the association you play under for specific rulings.