Is Acquiring JC Tretter Realistic for the Vikings? - Daily Norseman
Former Browns center JC Tretter retiring after 8 NFL seasons, will
Former Browns, Packers center JC Tretter announces retirement
Former Packers, Browns lineman JC Tretter announces NFL retirement
5-year Browns center JC Tretter announces retirement
5-year Browns center JC Tretter announces retirement
2017 NFL free agency - signings, reaction, moves, deals - ESPN
JC Tretter, Cleveland Browns, C - News, Stats, Bio
Veteran NFL Player Announces Retirement at 31, Announces Future Plans