Baltimore Ravens All-Pro cornerback Marlon Humphrey says he has the coronavirus, and several other NFL teams reported positive tests Monday, providing new concerns for a league trying to complete the season amid a pandemic.

The Green Bay Packers reported that a player tested positive for COVID-19, and Arizona coach Kliff Kingsbury confirmed that two Cardinals tested positive over the weekend.

In addition, the Browns conducted meetings remotely Monday after a player reported that he is experiencing “COVID-19-related” symptoms.

The NFL administers daily testing, including game day and during bye weeks. Results of the tests generally come in overnight. Tests taken the day before the game determine if the player can play on game day.

On game day, they have their temperatures taken by contactless thermometers, are screened for loss of smell or taste and have other symptoms checked prior to entering the stadium, NFL spokesman Brian McCarthy said. Players and personnel also have to report any symptoms.

The Packers on Monday also sent out a release that said a player tested positive. According to multiple reports, that player is running back AJ Dillon, who was placed on the reserve/COVID-19 list.

Packers officials said all player meetings Monday would be conducted virtually. The player who tested positive has self-quarantined.

This marks the first time a Packers player has tested positive during the season. Green Bay (5-2) has a short week before playing at San Francisco (4-4) on Thursday night.

After facing Green Bay on Sunday, the Minnesota Vikings moved forward after last week having two players on the COVID-19 list.