At the beginning of last season, the NFL's top rivalry was the Patriots-Colts. That matchup, featuring two future Hall of Fame quarterbacks and several playoff meetings, had captured the nation's attention. 

It remains one of the top rivalries. But, by the end of last season, the Steelers-Ravens surpassed it and moved into the top spot.  

With the two teams battling it out for the division year in and year out, almost every game has been meaningful. Several of the games have been epic like the 2001 playoff match-up and this year's AFC title game.

With rare exceptions, the two teams have been on top of the division from the time it was formed. When they play, it is a slugfest with the two teams striving to outhit each other.

The AFC Championship game this year, their third matchup in '09, was one of the hardest h...

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