Austin, 6-2, 312 pounds, was cut by the Miami Dolphins on Oct. 13 after playing in two games and making one tackle. A former second-round pick by the New York Giants in 2011, he missed his rookie year with a pectoral muscle injury and played in eight games last year with eight tackles.
The Cowboys liked Austin coming out of the draft, but because they were a 3-4 defense at the time he was not a good fit.
“He’s one of those guys we kept our eye on,” coach Jason Garrett said. “Obviously our situation on the defensive line we’ve had a lot of different injuries up there, so you look at the landscape of personnel and see you who can bring in and try to help your football team. He was playing with Miami just a couple of weeks ago. They released him. He’s in pretty decent shape because he’s been in training camp and been playing. We’d like to tap into some of that ability that caused him to be such a high draft pick.”
The spot became available on Friday when the Cowboys put defensive end Edgar Jones on short-term injured reserve. Jones had sports hernia surgery on Friday and is ineligible to play until Dec. 15 against the Green Bay Packers.
The Cowboys now have 10 defensive linemen on the 53-man roster and five have been added since Sept. 3.
The Cowboys also re-signed guard Ray Dominguez and wide receiver Jamar Newsome to the practice squad. They were released in a procedural move last Saturday when the Cowboys were down to 52 players on their roster.