DHYS will play under Dizzy Dean rules plus DHYS-specific rules for each league, which are listed below.

Dizzy Dean Rules

MLB Rules

Rules Specific to DHYS and Medlock Park:

Rookie, A/AA, & AAA (Updated March 2019)

Major

Senior

Middle School Playing Rules - 2019

Travel Team Guidelines

DHYS Bat Rules 

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NOTE: Beginning January 1, 2018, USA Baseball will implement a new method for measuring bat performance in the testing of youth baseball bats.  The new "USA Bat Standard" will create wood-like performance in youth baseball bats. 

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All bats must be made of wood, metal, graphite or ceramic material, must be round, manufactured for baseball play and be no longer than 42".

BAT RULES FOR SPECIFIC DIVISIONS:

Rookie (T-Ball, Ages 5U-6U)

Prohibited: All composite bats without a material certification stamp are prohibited.

Allowed: Wood barrel bats, metal tee ball bats with or without a material certification stamp, composite and metal bats with a USA Bat Standard stamp.

Barrel width: No greater than 2 3/4" in diameter at the widest part

A/AA (7U-8U), AAA (9U-10U), and Major (Ages 11U-12U)

Prohibited: All composite bats without a material certification stamp and "T-Ball" bats are prohibited.

Allowed: Wood barrel bats or composite and metal bats with a USA Bat Standard stamp.

Barrel width: No greater than 2 3/4" in diameter at the widest part

Seniors (Ages 13U-15U)

Allowed: Only bats that meet the following material and size restrictions are allowed.

Materials: Wood barrel bats are allowed. Metal and composite bats with the BBCOR , USSSA 1.15 BPF material certification, or USA Bat Standard stamp are allowed. Please note that any material except wood requires a material certification stamp.

Barrel width: maximum 2 5/8" diameter at the widest part

Drop (length-weight): 15U players shall use BBCOR drop-3 bats, 14U players shall use bats no lighter than a drop-5, 13U players shall use bats no lighter than a drop-9.  
 

Middle School (Grades 6 through 8)

Allowed: Only bats that meet the following material and size restrictions are allowed.

Materials: Wood barrel bats are allowed. Metal and composite bats with the BBCOR , USSSA 1.15 BPF material certification, or USA Bat Standard stamp are allowed. Please note that any material except wood requires a material certification stamp.

Drop (length-weight): A drop of 5 or less is required for players in 8th grade. A drop of 9 or less is allowed for players in 6th or 7th grade.