We’re through eight weeks of the 2015 college football season, and for the Big 12, it's go time. TCU, Baylor, OSU and OU are all in the race for the College Football Playoff and we'll see the first of six huge games between those four teams take place this Saturday when the Horned Frogs travel to Stillwater.

For last week's rankings, click here

With that said, it’s time to unveil the latest batch of power rankings. Enjoy:

1. TCU (8-0, 5-0)

--

The Frogs are starting to assert themselves on both sides of the ball. The offense has been stellar all season, but now the defense seems to be picking it up. Next week’s trip to Stillwater will be one of the biggest games of the college football season.

2. Baylor (7-0, 4-0)

--

Baylor holds strong at No. 2 after a bye week. Freshman QB Jarrett Stidham makes his debut on Thursday night at Kansas State in a must-win for the Bears.

3. Oklahoma State (8-0, 5-0)

--

OSU got behind big but came back in full force to beat Texas Tech on Saturday. The Cowboys dropped 70 points on the Red Raiders, but allowing 53 is the big concern. Tech’s offense is obviously good, but this is the second time this season that the highly-regarded OSU defense has been shredded in the first half. That’ll need to be cleaned up as the Pokes prepare for one of the biggest home games in school history on Saturday.

4. Oklahoma (7-1, 4-1)

--

OU shredded Kansas on Saturday and have averaged 60 points per game over their past three wins. The Sooners host Iowa State on Saturday before facing the murderer’s row in the final three contests.

5. Texas Tech (5-4, 2-4)

+2

It’s hard to imagine allowing 70 points, losing, and moving up two spots in the rankings. But the Big 12 is very mediocre beyond the top four teams, and Tech has shown the most consistency.

6. West Virginia (3-4, 0-4)

--

West Virginia’s march down death row is finally over. The Mountaineers lost the Big 12’s Big Four by a combined 81 points, but brighter days should be ahead. If WVU can get past Texas Tech on Saturday, it’ll have a legit shot at an eight-win season.

7. Texas (3-5, 2-3)

-2

Just when you thought Charlie Strong’s squad was gonna turn the corner and make a run, Texas gets shut out at Iowa State. The Longhorns’ 24-0 loss was a complete embarrassment and could end up costing them a bowl trip.

8. Iowa State (3-5, 2-3)

+1

Iowa State earned one of the more shocking victories in the country on Saturday. It’s important to reiterate that four of ISU’s five losses have come against still-undefeated teams in TCU, Baylor, Toledo and Iowa. The Cyclones’ faint bowl hopes are still alive.

9. Kansas State (3-4, 0-4)

-1

The Cats slipped a spot this week despite not playing a game. Bill Snyder’s club has a shot to shake up the college football landscape on Thursday when Baylor rolls into town with a freshman quarterback.

10. Kansas (0-forever)

--

Kansas scored a touchdown on Saturday against Oklahoma. That’s the end of the good news.