CINCINNATI -- The Cincinnati Bengals placed guard Andrew Whitworth and guard/offensive tackle Scott Kooistra on injured reserve Friday and signed two players.
Both players were hurt in the Nov. 16 game against Philadelphia, Whitworth with an ankle injury and Kooistra with a knee injury.
They were inactive for last week's game at Pittsburgh.
Cincinnati also signed rookie offensive tackle Kirk Barton from the Miami practice squad and first-year cornerback Geoffrey Pope from its own practice squad.
Barton played one game for Chicago and Pope played in three Cincinnati games this season.
The Bengals will play the Baltimore Ravens on Sunday. Baltimore has the NFL's fourth-ranked run defense and is No. 2 overall.
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