The odds of our securing one of the playoff berths aren't good at all. Too much has to happen along the way, and barring some completely fluky second half of the season, the mathematics simply aren't in our favor. Stranger things have happened, such as in 1990, but I highly doubt that anything of that magnitude will ever happen again.
SEC title game winner (Georgia vs Alabama) gets in, one way or the other.
Cincinnati doesn't have anyone left on the schedule who can present a serious challenge, except for maybe SMU. If they stay unbeaten, and keep winning the way they do, they're going to get a playoff spot, just to appease the clamoring from the non P5 folks.
The SEC title game loser has an excellent chance of getting in, if it's a relatively close game.
For that last spot:
Oklahoma plays Oklahoma State and Baylor. The winner of that trio's encounters has a good chance of getting in, and unless everything falls apart for the Sooners, Oklahoma is going to take it, especially since they now have a pretty solid quarterback. An undefeated Oklahoma has the best chance.
Oregon could stand a reasonable chance of losing against UCLA or Utah. We shall see, but if they finish with just one loss, they're still be ahead of us, and being the Pac 12 champ makes them appealing.
The last one standing from the 4-way mess of the Big Ten East (tOSU, Michigan, Penn State, Michigan State) goes against Iowa, and the winner of that mess has a fair chance of getting in, even if they have one loss.
There are simply too many teams ahead of us who could finish undefeated, or with just one quality loss, and we're not going to get any favors from the polls. Just look at how Ole' Miss jumped us, despite barely beating a terrible Tennessee team, and with help from the refs.