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Can Polamalu outthink Manning?

The well-rested Colts haven't played a meaningful game since Week 15. The Steelers, meanwhile, have had their backs against the wall for some time and are coming off a spirited playoff victory over a hated division rival.

The Steelers are confident and have momentum, but they'll have to play a lot better than they did in Week 12, when they were blown off the field by the then-undefeated Colts.

Can Pittsburgh pull off the upset? The key will be finding the right matchups. Here is a look at five to keep an eye on in this game: