JC Tretter makes retirement decision amid blackball speculation
Free agent JC Tretter retires, will focus on NFLPA role
Browns center and NFLPA president, JC Tretter, announces his retirement from the NFL
Former Browns center JC Tretter announces retirement from NFL
Browns center JC Tretter calls idea of wristbands signifying vaccinated and unvaccinated players 'nonsensical'
JC Tretter Retires From NFL After Nine-Year Career - Sports Illustrated
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated
Cleveland Browns News and Rumors 8/26: Nice Guys, New Forums, and a Dangerous Absence of Complaint
Akron graduate JC Tretter voted president of NFL Players Association
JC Tretter, former Cleveland Browns center, retires after 8 seasons in NFL but remains NFLPA president - ESPN
JC TRETTER RE-ELECTED AS PRESIDENT OF NFL PLAYERS ASSOCIATION
J.C. Tretter hints that role with NFLPA created turmoil with Browns
JC Tretter, former Cleveland Browns center, retires after 8 seasons in NFL but remains NFLPA president - ESPN
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated