Northwestern defense stuns No. 20 Utah 31-20 in Holiday Bowl

Northwestern offensive lineman Trey Klock (39) dives past Utah defensive back Jaylon Johnson (1) for a touchdown during the second half of the Holiday Bowl NCAA college football game against Utah, Monday, Dec. 31, 2018, in San Diego. (AP Photo/Denis Poroy)

Utah players congratulate wide receiver Jaylen Dixon (25) after scoring a touchdown during the first half of the Holiday Bowl NCAA college football game against Northwestern, Monday, Dec. 31, 2018, in San Diego. (AP Photo/Denis Poroy)

Northwestern offensive lineman Trey Klock (39), center, is congratulated by wide receiver Ramaud Chiaokhiao-Bowman (81) after scoring a touchdown during the second half of the Holiday Bowl NCAA college football game against Utah, Monday, Dec. 31, 2018, in San Diego. (AP Photo/Denis Poroy)

Northwestern safety Jared McGee (41) picks up a fumble next to linebacker Paddy Fisher (42) during the second half of the Holiday Bowl NCAA college football game against Utah Monday, Dec. 31, 2018, in San Diego. McGee returned the fumble for an 86-yard touchdown. (AP Photo/Denis Poroy)

Utah quarterback Jason Shelley (15) fumbles as he is tackled by Northwestern defensive lineman Joe Gaziano (97) as he runs during the second half of the Holiday Bowl NCAA college football game Monday, Dec. 31, 2018, in San Diego. The fumble was picked up by Northwestern and returned for an 86-yard touchdown. (AP Photo/Denis Poroy)