Big 12 Coordinator of Officials Greg Burks describes rule changes for the upcoming season during Big 12 Conference NCAA college football media day Tuesday, July 16, 2019, at AT&T Stadium in Arlington, Texas. (AP Photo/David Kent)

Big 12 Coordinator of Officials Greg Burks describes rule changes for the upcoming season during Big 12 Conference NCAA college football media day Tuesday, July 16, 2019, at AT&T Stadium in Arlington, Texas. (AP Photo/David Kent)

Baylor head coach Matt Rhule speaks during Big 12 Conference NCAA college football media day Tuesday, July 16, 2019, at AT&T Stadium in Arlington, Texas. (AP Photo/David Kent)

Kansas coach Les Miles speaks to the media on the first day of Big 12 NCAA college football media days Monday, July 15, 2019, at AT&T Stadium in Arlington, Texas. (AP Photo/David Kent)

Iowa State head coach Matt Campbell speaks during Big 12 Conference NCAA college football media day Tuesday, July 16, 2019, at AT&T Stadium in Arlington, Texas. (AP Photo/David Kent)