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Athletics Information > Baseball Information

Middle School/Junior High Bat Rule

The WIAA Executive Board approved that -5 and -7 bats are legal for middle level players, even though bats of that size will not have the BBCOR stamp (bat manufacturers are not testing the -5 and -7 bats.)

    •     For middle level (middle school/junior high) leagues playing on fields with 80' base paths and a distance from 
          the pitching rubber to the point of the plate of 54', that league may adopt bat dimensions up to but not 
          exceeding a length-to-weight ratio of -5.  This means that the weight of the bat, in ounces, may be no more 
          than 5 less than the length of the bat in inches.

    •     For middle level leagues playing on fields with 90' base paths and a distance from the pitching rubber to the 
          point of the plate of 60'6", that league may adopt bat dimensions up to but not exceeding a length-to-weight 
          ratio of -7. (July, 2011)
Further questions or requests for clarification should be addressed to Cindy Adsit, WIAA Assistant Executive Director and WIAA baseball rules interpreter at 425-282-5232 or cadsit@wiaa.com.

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