49ers fullback Kyle Juszczyk suffered a knee sprain according to Kyle Shanahan in his post-game press conference. An MRI on Monday will determine the severity of the injury.
The impact is likely to be felt by all the 49ers' running backs as Juszczyk is widely versatile in the offense and is arguably the best fullback in the league. He's likely to miss the upcoming matchup against the Rams, but a severe knee sprain could keep him out for an extended period of time. Check back for updates once his MRI results come through.