With camp 10 days away, NFL and players at odds over testing, preseason, money - The Athletic
Browns center and NFLPA president JC Tretter makes 2nd strong plea for daily COVID-19 testing for vaccinated players with NFL in a 'worse spot' than last year
NFL, players agree to daily COVID-19 testing for first 2 weeks of training camp - ESPN
The NFL cast JC Tretter out; the NFLPA president says that only makes him more powerful - Sports Illustrated
NFL stops COVID testing all asymptomatic players, including unvaccinated - Buffalo Rumblings
Coronavirus Updates : NPR
NFL offers zero preseason games and NFL and NFLPA agree on daily COVID-19 testing for first 2 weeks of camp
Super Bowl 2021: How NFL players who had COVID-19 returned to play
Implementation and Evolution of Mitigation Measures, Testing, and Contact Tracing in the National Football League, August 9–November 21, 2020
NFLPA Blames The NFL For Covid-19 Outbreak, Says They Asked For Daily Testing
Tower Opinion: Cancel the 2020 NFL season
As pandemic eases, NFL and NFLPA suspend their joint COVID protocols - The Boston Globe
NFL could become trend-setter for COVID-19 testing policies