Former Packers center, NFLPA president JC Tretter retires
Updated) Cleveland Browns Release Center JC Tretter
J.C. Tretter: Breaking News, Rumors & Highlights
Browns C Nick Harris works towards filling big shoes JC Tretter left behind
J.C. Tretter, Cleveland Browns C, NFL and PFF stats
Cleveland Browns release JC Tretter
JC Tretter, Browns Agree to 3-Year Contract, News, Scores, Highlights, Stats, and Rumors
The Browns are releasing center JC Tretter
J.C. Tretter announces retirement from football - Daily Norseman
Akron native J.C. Tretter retires from NFL after eight seasons
49ers news: CBS' Sports believes the 49ers should sign C J.C. Tretter before the season starts - Niners Nation
Browns have released C J.C. Tretter. Move saves $8.2M. Nick Harris will take over at Center.