AP Top 25 Heat Check: Big gap between top and bottom half

Clemson's Austin Bryant reacts after a tackle during the first half of an NCAA college football game against Louisville Saturday, Nov. 3, 2018, in Clemson, S.C. (AP Photo/Richard Shiro)

Alabama running back Damien Harris (34) waves goodbye to LSU fans after his touchdown in the second half of an NCAA college football game against LSU in Baton Rouge, La., Saturday, Nov. 3, 2018. Alabama won 29-0. (AP Photo/Gerald Herbert)