JC Tretter Retires from NFL at 31; Former Packers, Browns Center Is NFLPA President, News, Scores, Highlights, Stats, and Rumors
San Francisco 49ers: J.C. Tretter Signing Is A Must After Alex Mack Retirement
J.C. Tretter announces retirement from football - Daily Norseman
Former Browns center, NFLPA president JC Tretter retires
JC Tretter retires after interest in playing for Vikings, other teams went unreciprocated - Sports Illustrated Minnesota Vikings News, Analysis and More
Former Browns center JC Tretter retiring after 8 NFL seasons, will stay on as NFLPA president
On to the next chapter': Former Cleveland Browns center JC Tretter announces retirement
JC Tretter Retires From NFL After Nine-Year Career - Sports Illustrated
Former Browns, Packers center JC Tretter announces retirement after eight NFL seasons