The Tennessee Titans placed veteran offensive tackle Michael Roos on injured reserve, ending his season.
He's having knee surgery next week on his right knee.
Roos has started all 148 games for the Titans.
He's being replaced by Taylor Lewan.
The Titans promoted tight end Brett Brackett from the practice squad. He has previous stints with the Miami Dolphins, Arizona Cardinals, Jacksonville Jaguars and Philadelphia Eagles.
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Aaron Wilson covers the Ravens for The Baltimore Sun