I believe it pertains to eligibility to continue high school play. Seniors have exhausted theirs when the football season ends.A answer.............actually it's a guess......It may have something to do with the amount of practice time an athlete gets in the preseason. Underclassmen can only practice the allowed amount and are not allowed to have full contact til August 5th I believe. BTango would know the answer since mine is an educated guess.
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