NFL is still committed to playoffs despite more Covid-19 outbreaks
Browns center JC Tretter tests positive for COVID-19
Getting to January a major challenge for NFL as Covid-19 ravages team rosters
Former Browns center, NFLPA president JC Tretter retires
Grievance filed by NFL says players' union leaders advised running backs to fake injuries
NFLPA president JC Tretter says 'hurdles' remain before NFL's return
How Cleveland Browns' JC Tretter handles NFLPA presidency in pandemic
A conversation with Browns' JC Tretter as new union chief in turbulent times - The Athletic
Cleveland Brown JC Tretter tests positive for COVID-19; two activated
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated
JC Tretter: NFL would've canceled Browns-Raiders game if not for union
Will Browns center Nick Harris be on the outside looking in this year?