Tretter re-elected president of NFL union
Browns' Tretter calls for discipline against K.C. assistant
Browns starting C Tretter sidelined after procedure on knee
Former Cleveland Browns Center J.C. Tretter has retired - Bucs Life
NFLPA President JC Tretter Talks Voluntary Workouts, Browns & More
J.C. Tretter Elected As President of NFL Players Association
JC Tretter and NFLPA announce new executive director
Cleveland Browns join NFL teams saying they'll skip off-season
Cleveland Browns release center JC Tretter, save $8.25 million
Browns center JC Tretter re-elected as NFLPA president for a
JC Tretter Retires from NFL at 31; Former Packers, Browns Center
JC Tretter lobbies for all-virtual offseason as NFLPA president
Browns center J.C. Tretter, the new NFLPA president, assessing
Former Browns C JC Tretter Announces Retirement, 'Doubling Down