NFL postpones three games due to Covid surge
Impact of the COVID-19 pandemic on gridiron football - Wikipedia
Virus Outbreaks Rattle N.F.L. and College Sports as Big Games
How the surge in COVID-19 cases unfolded in the sports world - The
NHL Pulls Players Out of Winter Olympics Following COVID-19 Case
NHL COVID outbreaks: League pauses cross-border games
COVID-19 surge: Here's what's canceled or closing across the US
Novak Djokovic to Play at U.S. Open After COVID-19 Policy Change
LeBrun: NHL's Bill Daly weighs in on schedule shifts, protocol
AP sources: NHL to withdraw from Olympics after COVID surge