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Pittsburgh Steelers (6-2): Bryant McFadden, CB
He made a start at the beginning of the year, was awful and then got hurt. That about sums up McFadden, who's gone from starter to special teams guy in about the time it takes to say the word "football." Plus, the guy who replaces him (William Gay) isn't exactly a career starter either.
Baltimore Ravens (5-2): Joe Flacco, QB
This is outside the box. I consider Flacco their MVP as well, but in their two losses (in this division, the losses are each very important) he's been their worst enemy as well. He's just not having a top-notch year, and right now he is what's separating the Ravens from being the best team in the AFC.
Cincinnati Bengals (5-2): Cedric Benson, RB
It's hard to argue with anything the Bengals are doing in the passing game with a rookie quarterback and star receiver. The running game, led by Benson, is not in the same league. Benson is averaging 3.9 yards a carry, but he's not scoring. He has two touchdowns, and his off-field issues are keeping him from playing games. That's me-first, LVP spectacular behavior.
Cleveland Browns (3-4): Peyton Hillis, RB
The mighty have fallen in Cleveland. First, Hillis hasn't run well. Then he got hurt and hasn't seen the field since. He's in a contract dispute with just about zero leverage for a big, long deal. This is the Madden Curse at its finest. Now it's making players play awful and get hurt.