17.11.3.1 First Practice Date. A member institution shall not commence official preseason football practice sessions for the varsity, subvarsity or freshman team earlier than 23 days before its first scheduled contest or before the Friday after the institution's first contest if the first contest is scheduled for Thursday of the opening weekend. (Revised: 1/10/89, 1/10/91 effective 8/1/92, 1/12/04, 1/9/06 effective 8/1/06, 1/17/15 effective 8/1/15, 1/26/19 effective 8/1/19)