Timeline of the NFL COVID-19 outbreak -- How positive tests led to postponed games - ESPN
NFL and NFL Players Association drop all COVID protocols for 2022 season : Coronavirus Updates : NPR
Covid leads to NFL, NHL postponements, NCAA delays and cancellations
Key Raiders Players Face Covid-19 Isolation Before Their Big Game - WSJ
Big Ten will try to cram nine football games into nine weeks during a pandemic – Twin Cities
We are very disappointed'; Michigan cancels game against Ohio State
2nd Tri-State high school football game canceled after positive COVID-19 test
Coronavirus: What sporting events are affected by the pandemic?, Coronavirus pandemic
Three NFL games moved due to COVID-19 outbreaks
Texas college football returns to UT-Austin under pandemic restrictions
The N.F.L. Has Prevented Coronavirus on the Field. Off It Is Another Matter. - The New York Times
NFL COVID-19 outbreak - Can the league really get through the 2020 season? What we know about new positive coronavirus tests - ESPN
NHL postpones 3 Senators games due to COVID-19 outbreak