Halloween's college football slate is headlined by a heavyweight collision at the Coliseum, where Ohio State visits USC — with a twist under center. The Buckeyes are expected to start Luke Fahey at quarterback after Julian Sayin suffered an injury at Indiana, putting a new starter on the field in one of the sport's toughest road environments.

The stakes cut both ways. Yahoo Sports framed the game as a potential last stand for Lincoln Riley at USC, with the Trojans' trajectory under their head coach squarely on the line against a marquee opponent.

Elsewhere in Los Angeles, No. 7 UCLA welcomes Nevada and its 3-4 Wolf Pack to the Rose Bowl for a Week 9 Halloween showdown — a far gentler assignment for the ranked Bruins, but part of a loaded Saturday in Southern California.