Northwestern head coach Pat Fitzgerald congratulates the players after they recovered a fumble against Duke during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke running back Mataeo Durant (21) celebrates as he runs for a touchdown past Northwestern linebacker Chris Bergin (28) and Northwestern safety Brandon Joseph (16) during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke quarterback Jordan Moore (8) celebrates his touchdown with teammates during the first half of an NCAA college football game against Northwestern in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke wide receiver Darrell Harding Jr. (3) hauls in a pass for a big gain against Northwestern defensive back Rod Heard II (24) during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. Duke scored shortly after this play. (AP Photo/Chris Seward)

Duke running back Mataeo Durant (21) fumbles as he is hit by Northwestern defensive back Rod Heard II (24), linebacker Bryce Gallagher (32) and defensive back Coco Azema (0) during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Northwestern wide receiver Raymond Niro III (23) is tripped by Duke cornerback Cameron Bergeron (4) as he runs upfield during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke running back Mataeo Durant (21) stiff-arms Northwestern defensive back Bryce Jackson (22) as he runs for a touchdown during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke cornerback Leonard Johnson (33) is congratulated by teammates and coaches after he intercepted a pass against Northwestern during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke cornerback Josh Blackwell (31) dives into the end zone past Northwestern offensive lineman Ben Wrather (71) and offensive lineman Sam Gerak (52) after he intercepted a pass and ran it in during the second half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. The play was called back on a penalty. (AP Photo/Chris Seward)

Northwestern quarterback Andrew Marty, front left, fumbles after being hit by Duke defensive end Ben Frye (93) during the second half of an NCAA college football game against in Durham, N.C., Saturday, Sept. 18, 2021. Duke recovered the fumble. (AP Photo/Chris Seward)

Duke cornerback Leonard Johnson (33) breaks up a pass intended for Northwestern wide receiver Bryce Kirtz (17) during the second half of an NCAA college football game against in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Northwestern wide receiver Bryce Kirtz (17) tumbles after being hit by Duke cornerback Josh Blackwell (31) during the second half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke defensive end Ben Frye (93) celebrates in front of Northwestern tight end Charlie Mangieri (89) after he recovered a fumble during the second half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Northwestern quarterback Andrew Marty (7) passes during the second half of an NCAA college football game against Duke in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke quarterback Gunnar Holmberg (12) hands off to running back Mataeo Durant (21) during the first half of an NCAA college football game against Northwestern in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke head coach David Cutcliffe, left, confers with officials as a fourth down play is reviewed during the second half of an NCAA college football game against Northwestern in Durham, N.C., Saturday, Sept. 18, 2021. The ruling on the field was a first down, but on review the play was overturned and Northwestern took over on downs. (AP Photo/Chris Seward)

Northwestern quarterback Andrew Marty (7) evades Duke safety Lummie Young IV (23) on a run during the second half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Duke wide receiver Jalon Calhoun (5) is run out of bounds by Northwestern defensive back Cameron Mitchell (2) and linebacker Chris Bergin (28) during the first half of an NCAA college football game in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)

Northwestern tight end Marshall Lang (88) celebrates his touchdown reception with running back Evan Hull (26), offensive lineman Sam Gerak (52) and wide receiver Genson Hooper Price (18) during the second half of an NCAA college football game against Duke in Durham, N.C., Saturday, Sept. 18, 2021. (AP Photo/Chris Seward)