Oklahoma State dropped in the AP poll last week, despite a dominating win over SE Louisiana. So it should come as no surprise that the Cowboys have fallen out of the top 25 this week after entering No. 22, thanks to a 30-27 loss to Central Michigan.
The Cowboys next opponent, Pitt, heads into the week with a 2-0 record but remains unranked, despite a 42-39 win over Penn State Saturday where they rushed for 341 total yards.
There are only three teams still ranked in the AP Poll.
Texas (11)
Oklahoma (14)
Baylor (21)
You can see the full rankings here: http://collegefootball.