The Cleveland Browns have lost yet another player to COVID-19.Leading up to the game against the Las Vegas Raiders on Saturday, the Browns lost The Browns were already set to play with Starlin Castro Jersey backup quarterback Case Keenum after starting quarterback Baker Mayfield tested positive for COVID-19.Now Keenum has tested positive for COVID-19, forcing the Browns to add Nick Mullens to their active roster.In order to accelerate player return, on Thursday Jorge Alfaro Jersey the NFL relaxed their testing requirements to clear vaccinated personnel.Mayfield showed frustration toward the situation.@NFL Make up your damn mind on protocols. Showing up and making only 3 teams test?!? All so you can keep the game as scheduled to make money, Brian Anderson Jersey Mayfield said via his Twitter.Scroll to Continue"Actually caring about player safety would mean delaying the game with this continuing at the rate it is .... But to say you won't test vaccinated players if they don't have symptoms, then to pull this randomly. Doesn't make any sense to Andre Dawson Jersey me," Mayfield said in another tweet.The Browns have added safety Grant Delpit and cornerback A.J. Green to COVID-19 protocols. Safety Ronnie Harrison Jr. was also added to the list on Thursday.The total COVID-19 protocol count is up to roughly 20.Safety John Johnson and cornerback Greg Newsome are also in the COVID-19 protocols.The Browns could potentially be without their top three safeties and three of their top five cornerbacks come Saturday.Want to talk about this? Want to air your opinion about all things Las Vegas Raiders? Maybe you like to talk about other sports that aren't Justin Bour Jersey Silver and Black related? We got your back.