NFL games in 2020-21 season associated with spikes in COVID cases: research
NFL commits $250 million on social justice causes, targeting 'systemic racism'
COVID-19 Absences Affect NFL Outcomes - Johns Hopkins Coronavirus Resource Center
Coronavirus live updates: NFL prepared to alter schedule - Los Angeles Times
How the NFL navigated COVID-19 this season - 959,860 tests, $100 million and zero cancellations - ESPN
NFL: Can 2020 season be played in full as coronavirus concerns loom?
Can the federal government block the NFL from playing its season? And other burning questions about the NFL's bid to return - MarketWatch
NFL faces a season of contingencies in the face of COVID-19
Barber: Warriors, Giants, A's, 49ers plot coronavirus exit strategies