The Tennessee Titans waived 16 players on Friday to get down to the NFL's mandatory 53-man roster limit while placing five others on injured reserve, including veteran defensive ends Dave Ball and Leger Douzable.

Ball, a 19-game starter for the Titans over the past two seasons, has been battling recurring concussion symptoms throughout training camp and missed two games last year with similar issues. The seven-year veteran produced 36 tackles and four sacks in 14 games (8 starts) in 2011 and netted a career-best seven sacks while making 11 starts the previous year.

Douzable, signed as a free agent during the offseason, was dealing with a shoulder problem. The journeyman lineman compiled 38 tackles and one sack in 16 games, starting six, with Jacksonville a year ago.

Tennessee also put guard Ryan Durand, linebacker Kevin Malast and cornerback Terrence Wheatley on IR in addition to waiving wide receivers Devin Aguilar, James Kirkendoll, Michael Preston and D.J. Woods, tight ends Brandon Barden and Cameron Graham, defensive tackles Zach Clayton and Lamar Divens, guards Kyle DeVan and Michael Jasper, fullback Colin Mooney, safeties Aaron Francisco and Tracy Wilson, cornerback Chris Hawkins, center Chris Morris and defensive end Malcolm Sheppard.