NFL offensive guru Mike Martz says he's retiring from coaching - NFL News | FOX Sports on MSN

Mike Martz says he is retiring from coaching. The NFL Network first reported his decision this week and Martz told the Chicago Sun-Times, ''It's time.'' He did not return a message left Tuesday.
The architect of ''The Greatest Show on Turf'' as offensive coordinator and head coach of the Rams, Martz spent the past two seasons as the Chicago Bears' offensive coordinator. He had an expiring contract and left after what were described as philosophical differences.