Week 4 of college football saw upsets and close calls. Oklahoma State's struggles raise questions about Mike Gundy's future. Clemson's surprising 1-3 start mirrors last year's Florida State collapse. Indiana's dominant win over Illinois showcases their staying power. Texas Tech's victory over Utah solidifies their Big 12 contention. The American Athletic Conference is poised to produce the Group of 6's College Football Playoff representative.

Prepared by Emily Rhodes and reviewed by editorial team.