Portland Timbers and Thorns will require proof of COVID-19
Giants' Kadarius Toney one of NFL-record 37 COVID cases Monday
Buffalo Bills to require fans at games to be vaccinated against
Raiders: Only Vaccinated fans will enter Allegiant Stadium in 2021
Las Vegas Raiders to make fans prove they've been vaccinated - CBS
Chicago Bears: What NFL's move to a 17-game season means
Tailgating, face-painted fans back in force at NFL stadiums
About 1% of Bills fans referred to secondary review for
NFL's Las Vegas Raiders Will Require Fans To Show Vaccine Proof
Raiders defend decision to require vaccinations for fans
Column: Sports should require fans be vaxxed - or stay home