Notre Dame quarterback Jack Coan (17) throws against Purdue during the first half of an NCAA college football game in South Bend, Ind., Saturday, Sept. 18, 2021. (AP Photo/Michael Conroy)

Wisconsin defensive coordinator Jim Leonhard reacts to a stop during the first half of an NCAA college football game against Penn State Saturday, Sept. 4, 2021, in Madison, Wis. (AP Photo/Morry Gash)

Penn State's Sean Clifford tries to get away from Wisconsin's Nick Herbig during the first half of an NCAA college football game Saturday, Sept. 4, 2021, in Madison, Wis. (AP Photo/Morry Gash)

Notre Dame quarterback Jack Coan (17) hands off to running back Chris Tyree (25) in the second half of an NCAA college football game against Toledo in South Bend, Ind., Saturday, Sept. 11, 2021. Notre Dame won 32-29. (AP Photo/AJ Mast)

Purdue linebacker Jaylan Alexander (36) sacks Notre Dame quarterback Jack Coan (17) during the first half of an NCAA college football game in South Bend, Ind., Saturday, Sept. 18, 2021. (AP Photo/Michael Conroy)