Cleveland's J.C. Tretter Elected President of N.F.L. Union - The New York Times
Browns C J.C. Tretter elected NFLPA president
Browns' JC Tretter elected as new NFLPA president - ESPN
Browns release JC Tretter, union president
JC Tretter announces retirement - BrownsZone with Scott Petrak
NFLPA president missing from rosters 'suspicious,' ex-Browns teammate Joel Bitonio says
NFL labor vote being so close underscores split among players
Former Cleveland Browns C JC Tretter retires
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated