Browns center JC Tretter and Seahawks linebacker Shaquem Griffin announce retirement
JC Tretter (@JCTretter) / X
Browns should seriously consider bringing back JC Tretter
Did Chicago Bears sign their center of the future in Lucas Patrick?
NFLPA president JC Tretter calls for all teams to use grass fields - ESPN
NFLPA President J.C. Tretter Craps On League For Failing To Adapt To Virus And Not Prioritizing Player Safety - BroBible