By Adam Gibson | Sports Writer
College football closed out week three this past weekend with teams starting to show what they are truly made of. My Big 12 power rankings have changed up since week one after a couple upsets and offensive shootouts this past weekend.
1. Oklahoma (3-0) (No. 5 in AP poll)
The Sooners continue to rise in the ranks of the AP top 25, moving up from No. 7 to No. 5 since week one. Oklahoma opened up Big 12 play on Saturday with a 37-27 win over Iowa State in which junior quarterback Kyler Murray had yet another all-star performance.