NASHVILLE, Tenn. (AP) -- The Tennessee Titans effectively ended veteran quarterback Ryan Tannehill's season by placing him and two others on injured reserve Thursday.

Tannehill last played Dec. 18 in a loss at the Los Angeles Chargers where he finished the game despite re-injuring his right ankle in the first quarter. The 11-year veteran returned to finish the game.

The Titans (7-8) already had declared Tannehill out for Thursday night's game with the Dallas Cowboys.

Tennessee will have to beat the Jaguars in Jacksonville in the regular-season finale for the AFC South title and advance to the divisoinal round for Tannehill to have a chance to play again this season.