Notre Dame’s Ian Book, right, breaks away from a tackle by Northwestern’s Montre Hartage during the first half of an NCAA college football game Saturday, Nov. 3, 2018, in Evanston, Ill. (AP Photo/ …

Notre Dame’s Ian Book, right, breaks away from a tackle by Northwestern’s Montre Hartage during the first half of an NCAA college football game Saturday, Nov. 3, 2018, in Evanston, Ill. (AP Photo/Jim Young)