Browns center, NFLPA President JC Tretter wanted to make sure players had option to opt out
Former Browns center, NFLPA president JC Tretter retires
JC Tretter: Union pushed for postponements to get players paid after NFL wanted to cancel games
Browns' Center, Union Pres J.C. Tretter Claims NFL Wanted To Cancel Games, Then Gets COVID - Steelers Depot
JC Tretter lobbies for all-virtual offseason as NFLPA president
Latest On Browns C J.C. Tretter, O-Line Plans
NFLPA president, Browns C Tretter wants daily COVID testing – The Denver Post
Browns: JC Tretter joins The Pat McAfee Show to discuss NFLPA business
Browns release JC Tretter, turning to Nick Harris at center
Browns release C J.C. Tretter - Dawgs By Nature
Cleveland Browns center JC Tretter, left, and Joel Bitonio talk before an NFL football game against
Former Browns center J.C. Tretter announces his retirement
Cleveland Browns Release C J.C. Tretter - Sports Illustrated Cleveland Browns News, Analysis and More
Cleveland Browns release center JC Tretter, save $8.25 million against salary cap - ESPN