UPDATE: Mostert has been cleared of a concussion and can return to the game, per Matt Maiocco.
San Francisco 49ers running back Raheem Moster took a hard hit early in the second quarter. He called to the sideline for a replacement and promptly went to the locker room. He is likely getting evaluated for a concussion, but that is conjecture at this point. Jeff Wilson has been sharing work with Mostert so far and may need to take on a bigger role if Mostert can’t return.