NFLPA president J.C. Tretter of Browns says league is working toward COVID-19 game plan – Morning Journal
Former Browns center J.C. Tretter announces his retirement
Joel Bitonio wonders whether JC Tretter is being blackballed for his stance on player safety : r/nfl
JC Tretter lobbies for the end of OTAs and the old offseason schedule
JC Tretter retires after interest in playing for Vikings, other teams went unreciprocated - Sports Illustrated Minnesota Vikings News, Analysis and More
Browns Agree to Contract Extension With Center JC Tretter
Cleveland Browns JC Tretter: It is time to change the offseason - Dawgs By Nature
Growing Up on the Gridiron: JC Tretter
Charger News: NFLPA's JC Tretter wants NFL to listen to medical experts - Bolts From The Blue
NFLPA president JC Tretter rips NFL's Soldier Field standards
Wyatt Teller is why we love football - by Tyler Dunne
Offseason workouts a sticking point between NFL and NFLPA - The Boston Globe