After being knocked unconscious and suffering a concussion during a pregame collision with Brandon Meriweather, Redskins wide receiver Aldrick Robinson must now pass a series of concussion tests before he can return.

During his Monday press conference, Mike Shanahan said Robinson is now in the NFL concussion program and will not be allowed back on the field until he is able to pass the mandated tests. The injury occurred when Meriweather collided with Robinson as he was running after a ball during warmups. The two players fell to the turf and Robinson was later examined for head and neck injuries. Meriweather re-injured his knee during the collision and will miss at least one more game as a result.

While it's still unknown if Robinson will be able to recover in time for the Redskins game against the Atlanta Falcons on Sunday, Washington should have Pierre Garcon in the lineup once again. Garcon returned to the field last week and while he admitted he still isn't 100 percent, he didn't suffer any setbacks against the Buccaneers.