The Buffalo Bills placed defensive tackle Torell Troup on injured reserve on Tuesday with a back injury, according to the Buffalo News.

Troup, a second-round pick of the Bills in 2010, had played in just six of Buffalo's 11 games this season. He was projected to be the Bills' No. 3 tackle behind Marcell Darius and Kyle Williams at the start of the season.

To replace Troup on the roster, the Bills promoted defensive end Lionel Dotson from the practice squad.

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Terry McCormick covers the Titans for TitanInsider.com