Steelers safety Polamalu could miss next two games with bad knee

[Steeler Nation]

Pittsburgh Steelers safety Troy Polamalu didn't practice all week because of a left knee injury and will not play Sunday against the Kansas City Chiefs. Polamalu also might miss the Steelers' Nov. 29 showdown with the AFC North rival Baltimore Ravens, NFL Network's Jason La Canfora reports, citing a league source.

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