"We're at the mercy of the testing and all the rest of it," Raiders head coach Josh McDaniels told reporters prior to the release of the team's official game designations. "He'll go through the normal set of tests. We'll see if he clears."
In addition to Garoppolo, standout defensive end Maxx Crosby is also questionable to play due to a knee injury.
Garoppolo participated in every offensive snap in Vegas' Week 3 loss to Pittsburgh. Only after the game did the QB exhibit concussion symptoms, prompting the Raiders to evaluate and ultimately place him in protocol.
It's not unusual for a player in protocol to participate in practices on a limited basis. However, Garoppolo must pass each stage of concussion protocol -- including evaluation from an independent neurologist -- to be cleared for game action.