Big 12 prepping for a No. 1 vs. No. 2 game?

Colleague Mark Schlabach released his updated, post-signing day early top 25, and the top three is quickly notable.

Oklahoma held on to the top spot, and his No. 3 is Florida State.

Come Sept. 17, Oklahoma will travel to Tallahassee for the second half of a home-and-home with the Seminoles. Oklahoma won the first game 47-17 in Norman in 2010.

But Schlabach's No. 2? Alabama, which travels to Penn State the week before, on Sept. 10. A loss there could produce a rare No. 1 vs. No. 2 matchup in nonconference play.

Of course, we're still months away from preseason polls, and spring practice hasn't even begun, so there are plenty of variables between now and then, but a game that already looked enormous could become the biggest nonconference game of the season if the polls shake out just right.

Oklahoma hasn't officially released its 2011 schedule yet, but its other two nonconference games come against Tulsa and Ball State, presumably on Sept. 3 and Sept. 10.

Florida State is scheduled to play Louisiana-Monroe on Sept. 3 and Charleston Southern on Sept. 10.

Here's where the rest of the Big 12 ranks in Schlabach's top 25.

No. 1: Oklahoma

No. 10: Oklahoma State

No. 12: Texas A&M

No. 19: Texas

No. 21: Missouri