Bills backup DT Troup out for season with back injury

ORCHARD PARK, N.Y. -- Backup defensive tackle Torell Troup became the latest Buffalo Bill to land on season-ending injured reserve.

Troup was placed on the list Wednesday as a result of a back problem that has nagged the second-year pro since training camp.

Troup, a 2010 second-round draft pick out of Central Florida, has missed five games this season, including a 28-24 loss at the New York Jets last weekend after his back locked up one day earlier.

Defensive end Lionel Dotson was promoted off the practice squad as the Bills (5-6) prepare to host the Tennessee Titans (6-5) on Sunday.

The Bills also signed linebacker Robert Eddins to their practice squad.

Troup becomes the ninth Bills regular to be placed on IR this season. It's a group that includes starting defensive tackle Kyle Williams (foot).

The Associated Press contributed to this report.

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