JC Tretter retires after interest in playing for Vikings, other teams went unreciprocated - Sports Illustrated Minnesota Vikings News, Analysis and More
Former Cleveland Browns Center J.C. Tretter has retired - Bucs Life
JC Tretter Retires from NFL at 31; Former Packers, Browns Center Is NFLPA President, News, Scores, Highlights, Stats, and Rumors
Former Browns Center JC Tretter Announces Retirement - Sports Illustrated Cleveland Browns News, Analysis and More
Cleveland Browns news:Offensive line on the rise in PFF rankings
NFL Today, Week 17 West & SoCal News - Bally Sports
Is Acquiring JC Tretter Realistic for the Vikings? - Daily Norseman
Former Browns center JC Tretter announces retirement from NFL
Former Cleveland Browns Center J.C. Tretter has retired - Bucs Life