Week 9 is make-or-break time for numerous teams this weekend.
The Big Ten race will find some clarity as Michigan State and Nebraska face off.
The Big 12 will determine its pretenders when undefeated Kansas State matches up with Oklahoma, and Oklahoma State does the same with Baylor.
On the West Coast, Andrew Luck and the Stanford Cardinal will finally face a legitimate challenge in USC.
Here are five matchups with everything on the line this weekend. The games are broken down into how it will affect each team individually.