Jay Ratliff placed on PUP list
Updated: July 21, 2013, 1:16 PM ET
By Todd Archer | ESPNDallas.com
OXNARD, Calif. -- The Dallas Cowboys have placed defensive tackle Jay Ratliff on the active/physically unable too perform list after he strained a hamstring in Saturday's conditioning test.
Ratliff, a four-time Pro Bowler, was limited to six games last season because of an ankle injury and eventual sports hernia surgery. He was also held back in this year's organized team activities and mini-camp in the hopes of keeping him healthy as switched to a new position in the Cowboys' move to the 4-3 defense.
Guard Mackenzy Bernadeau also was placed on the active/PUP list with a hamstring injury. He did not take part in the offseason at all because of shoulder surgery performed after last season.
It is the second straight year that Bernadeau has not been ready at the start of training camp. Knee and hip injuries kept him out of most of camp in 2012, but he started every game.
The Cowboys also placed center Ryan Cook, guard Nate Livings (foot), guard Ronald Leary (calf), long snapper L.P. Ladouceur (calf), tackle Demetress Bell and wide receiver Lavasier Tuinei on the active/non-football injury list.
The Cowboys made official the signings of Bell, Tuinei and quarterback Alex Tanney on Sunday after they passed their physicals.
Last year, running back Felix Jones, safety Brodney Pool and wide receiver Andre Holmes failed the conditioning test and were not cleared to practice until they passed it a few days later. Pool was cut shortly after beginning to practice.