The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated
NFLPA president JC Tretter rips NFL's Soldier Field standards
NFLPA president JC Tretter says 'hurdles' remain before NFL's return
Protecting NFL players on the field is his job - Global Sport Matters
JC Tretter lobbies for all-virtual offseason as NFLPA president
Cleveland Browns' JC Tretter re-elected as NFLPA president
NFLPA president JC Tretter advocates for elimination of offseason program
NFLPA president missing from rosters 'suspicious,' ex-Browns teammate Joel Bitonio says
NFLPA president JC Tretter calls for turf ban amid rise of injuries
Novak Djokovic to Play at U.S. Open After COVID-19 Policy Change – SportsTravel
Why did JC Tretter retire? NFLPA president and former Browns, Packers center explains decision and how NFL may have influenced it