Williams leads No. 13 Notre Dame past Southern Cal, 31-16

Southern California safety Xavion Alford (29) breaks up a pass intended for Notre Dame tight end Michael Mayer (87) in the first half of an NCAA college football game in South Bend, Ind., Saturday, Oct. 23, 2021. (AP Photo/Paul Sancya)

Notre Dame wide receiver Avery Davis (3) celebrates his four-yard touchdown reception with quarterback Jack Coan (17) against Southern California in the first half of an NCAA college football game in South Bend, Ind., Saturday, Oct. 23, 2021. (AP Photo/Paul Sancya)

Notre Dame running back Kyren Williams (23) celebrates his five-yard touchdown run against Southern California in the first half of an NCAA college football game in South Bend, Ind., Saturday, Oct. 23, 2021. (AP Photo/Paul Sancya)

DUPLICATE***Southern California cornerback Chris Steele (8) breaks up a pass intended for DUPLICATE***Notre Dame wide receiver Lorenzo Styles Jr. (21) in the first half of an NCAA college football game in South Bend, Ind., Saturday, Oct. 23, 2021. (AP Photo/Paul Sancya)

Southern California wide receiver Drake London (15) breaks the tackle of Notre Dame safety Houston Griffith (3) in the first half of an NCAA college football game in South Bend, Ind., Saturday, Oct. 23, 2021. (AP Photo/Paul Sancya)