Virus Outbreaks Rattle N.F.L. and College Sports as Big Games Approach - The New York Times
Three NFL games postponed due to COVID-19 outbreaks - Sports Illustrated
Decoding an Outbreak: How Covid-19 Ripped through the Baltimore Ravens - WSJ
Minnesota Vikings linebacker Cameron Smith recovering from open heart surgery for birth defect found due to COVID-19 - ABC News
NFL COVID rules, explained: Everything to know about coronavirus and football in 2020
NFL coronavirus: Expect games to continue despite Covid-19 outbreaks
NFL postpones three games due to Covid surge
NFL postpones three games due to Covid surge
Three NFL games moved due to COVID-19 outbreaks
Three NFL games moved due to COVID-19 outbreaks
Impact of the COVID-19 pandemic on gridiron football - Wikipedia
Timeline of the NFL COVID-19 outbreak -- How positive tests led to postponed games - ESPN
NFL reschedules three games, as pro sports leagues face renewed covid concerns - The Washington Post