Browns center and union president JC Tretter wants COVID-19 testing to continue – Morning Journal
Hubbard on COVID List, Game Against Texans is On
NFLPA president JC Tretter says NFL should end offseason programs
Browns Agree to Deal With Center Pocic
Browns center JC Tretter re-elected as NFLPA president for a second term
NFLPA president, Browns C Tretter wants daily COVID testing – The Denver Post
NFLPA president, Browns C Tretter wants daily COVID testing
NFL players union's stance on Covid-19: JC Tretter, NFLPA president/Browns center
Browns Coach Kevin Stefanski, four others test positive for coronavirus ahead of playoff game - The Washington Post
Protecting NFL players on the field is his job - Global Sport Matters
Texans have 5 players on COVID-19 reserve amid NFL's surge of positive tests
Browns' Case Keenum joins Baker Mayfield on COVID-19 reserve, leaving Nick Mullens as the starter; Grant Delpit, Ronnie Harrison Jr., 2 more test positive
J.C. Tretter Tests Positive For COVID-19
NFL players raise COVID-19 concerns, others ignore advice