JC Tretter, former Cleveland Browns center, retires after 8 seasons in NFL but remains NFLPA president - ESPN
JC Tretter says Browns 'have done a really great job' with COVID-19 protocols, continues work for player safety
NFLPA president JC Tretter latest Cleveland Browns player to test positive for COVID-19 - ESPN
JC Tretter says Browns 'have done a really great job' with COVID-19 protocols, continues work for player safety
JC Tretter: NFL would've canceled Browns-Raiders game if not for union
Notes: JC Tretter tests positive for COVID-19; Grant Delpit, James Hudson III activated from COVID list - BrownsZone with Scott Petrak
Browns' Denzel Ward a keeper; floor $19 million a year, ex-agent says
Lamar Jackson wins a playoff game; Browns overcome hectic week - Sports Illustrated
NFL players sound off on Twitter over games being postponed
JC Tretter: NFL would've canceled Browns-Raiders game if not for union
Browns release C JC Tretter
NFL Power Rankings 2017 by Peter King: Nos. 17-32 - Sports Illustrated
Ross Tucker Pod] NFLPA President JC Tretter on running back salary issues : r/nfl
Browns center JC Tretter re-elected players' union president
Offseason In Review: Cleveland Browns