NFLPA president: CBA 'no' vote would've meant different world for players
Former Packers center, NFLPA president JC Tretter retires
JC Tretter on running backs' leverage: I can't recommend faking injuries, at least publicly - NBC Sports
Tretter '13 elected NFL Players Association president
Former Browns center, NFLPA president JC Tretter retires –
JC Tretter Stats, News and Video - C
NFL players union president blasts Soldier Field conditions
Former Browns C JC Tretter Announces Retirement, 'Doubling Down' In Role As NFLPA President - Steelers Depot
Browns center J.C. Tretter, the new NFLPA president, assessing 'long list of hurdles' for players - ESPN
Rodgers, NFL players urge league to nix turf, go with grass
Cleveland Browns J.C. Tretter Elected NFLPA President - Sports Illustrated Cleveland Browns News, Analysis and More
Browns center JC Tretter elected to second term as NFLPA president
JC Tretter speaks on what the NFLPA is doing to plan for NFL's return