Jay Ratliff will miss at least the first six games as he continues his rehab from groin and hamstring injuries. The Cowboys placed the defensive tackle on the reserve/physically unable to perform list.
It was one of 12 moves the Cowboys made Tuesday to reach the 75-player limit.
Dallas placed defensive end Tyrone Crawford (Achilles) and center/guard Ryan Cook (back) on season-ending injured reserve.
The Cowboys waived receiver Anthony Amos, tight end Colin Cochart, guard Dennis Godfrey, receiver Jared Green, linebacker Deon Lacey, kicker Brett Maher, receiver Eric Rogers, quarterback Nick Stephens and cornerback Brandon Underwood.
"I feel confident that he will," Jones said. "I believe in Jay. I think he’s a competitor. I think there’s some things that can be frustrating when you have injuries. Jay has a real injury. Those things happen. I’m convinced that we’ve got a program now -- he’s had a few setbacks -- that hopefully will put him on the road where he can play for us at some point this season."
The four-time Pro Bowler missed 10 games last season with various injuries. He had plantar fasciitis in the 2012 off-season, sprained his ankle in the preseason and then needed surgery late in the season to repair a sports hernia, which put him on injured reserve.
His sack totals have decreased five consecutive seasons, including no sacks in 2012.
-- Charean Williams