JC Tretter - Sports Illustrated
Former Browns center J.C. Tretter announces his retirement
NFLPA president: CBA 'no' vote would've meant different world for
NFLPA president, Browns center JC Tretter calls for CBA review
Browns center, NFLPA President JC Tretter wanted to make sure
'On to the next chapter': Former Cleveland Browns center JC Tretter
Former Browns center JC Tretter retiring after 8 NFL seasons, will
Former Browns center JC Tretter announces retirement from NFL
J.C. Tretter, WELCOME TO RETIREMENT 👏
JC Tretter Retires From NFL After Nine-Year Career - Sports
Browns get two players back, but still waiting on Baker Mayfield