Panthers on JC Tretter's shortlist of teams he would've signed with
JC Tretter Retires From NFL After Nine-Year Career - Sports Illustrated
JC Tretter, Browns Agree to 3-Year Contract, News, Scores, Highlights, Stats, and Rumors
Cleveland Browns News: J.C. Tretter claims NFL tried to change deal with NFLPA
Browns sign C JC Tretter to contract extension
Browns release C JC Tretter
File:J.C. Tretter Browns vs Giants AUG21.jpg - Wikipedia
Cleveland Browns release center JC Tretter, save $8.25 million against salary cap - ESPN
Cleveland's J.C. Tretter Elected President of N.F.L. Union - The New York Times
NFLPA president, Browns C Tretter wants daily COVID testing – The Denver Post
Browns release JC Tretter, union president