The have placed all five starting offensive linemen on the reserve/COVID-19 list along with safety Johnathan Abram, according to Paul Gutierrez of ESPN.
They were all deemed "high-risk contact" after tackle tested positive for COVID-19. They each were last in contact with Brown on Monday and will need to quarantine for five days since their last contact, providing a path to playing Sunday if they test negative.
As Gutierrez noted, the Raiders now have only five active offensive linemen on the 53-man roster and two on the practice squad, coming short of the eight required on a game day.