The Dallas Cowboys have released defensive coordinator Rob Ryan on Tuesday evening.
Ryan had one year remaining on a three-year contract.
The Cowboys defense finished 19th overall, 17th against the run and 21st against the pass.
"I inherited a team that was 31st in the league in defense and made them better," Ryan told ESPNDallas.com's Tim MacMahon. "I (expletive) made them a hell of a lot better. I'll be out of work for like five minutes."
Ryan's defense missed five starters because of injuries, including Pro Bowl nose tackle Jay Ratliff for the first four games of the 2012 season with an ankle injury.
Ryan also missed slot cornerback Orlando Scandrick (broken finger) and backup nose tackle Josh Brent, who was placed on reserve non-football illness for being charged with involuntary manslaughter resulting in the death of practice squad player Jerry Brown.
"I think I did a good job and I think our staff did a good job on defense trying to compete with what we had at the end of the year," Ryan told MacMahon. "But the best job we did was when we were able to coach our starters."
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