Vikings 'Never Returned Our Calls,' JC Tretter Says
JC Tretter, former Cleveland Browns center, retires after 8
JC Tretter: Brown center on NFL in coronavirus world
JC Tretter lobbies for all-virtual offseason as NFLPA president
On to the next chapter': Former Cleveland Browns center JC Tretter
NFLPA Elects J.C. Tretter As President
Browns center JC Tretter elected to second term as NFLPA president
NFL world reacts to NFLPA president retiring
Browns get two players back, but still waiting on Baker Mayfield
Former Packers center, NFLPA president JC Tretter retires
Former Browns center JC Tretter announces retirement from NFL