Orchard Park, NY (SportsNetwork.com) - After just one season at the position, Jim Schwartz is out as Bills defensive coordinator.

Schwartz, formerly the head coach of the Detroit Lions, was tabbed to lead Buffalo's defense after his successor, Mike Pettine, who ran the defense for the 2013 season, left to become Cleveland's head coach.

"I have the utmost respect for Jim and what he has been able to accomplish throughout his career and I know he feels the same about me. Jim's defenses are always tough and ranked near the top of the league standings," said new Bills head coach Rex Ryan in announcing the move on Tuesday.

"I wanted to give Jim the opportunity to pursue other opportunities and so we have terminated his contract. He did a terrific job with the Bills defense this past year and our plan is for our defense to continue to play well and be a dominating force."

Under Schwartz, Buffalo ranked fourth in fewest points allowed (289), third in passing yards allowed per game (205.8) and 11th in rushing yards allowed per game (106.4).