JC Tretter: NFL would've canceled Browns-Raiders game if not for union
Browns' JC Tretter potentially getting Colin Kaepernick treatment
Former Browns center J.C. Tretter announces his retirement
Browns sign C JC Tretter to contract extension
Why is former Browns starter J.C. Tretter still unsigned?
Center JC Tretter, the president of the NFLPA, is getting released
Why the Browns Released J.C. Tretter - Sports4CLE, 3/15/22
Should Packers consider signing JC Tretter?
Cleveland Browns' JC Tretter re-elected as NFLPA president
Former Browns center JC Tretter retires, will stay on as NFLPA