49ers star RB Christian McCaffrey leaves game with knee injury

(Photo credit: Mark Konezny-Imagn Images)
San Francisco 49ers star running back Christian McCaffrey departed Sunday night's snow game against the Buffalo Bills early in the second quarter due to a knee injury.

The 49ers originally listed McCaffrey as questionable to return shortly after he left the playing surface for further examination. However, San Francisco coach Kyle Shanahan later told NBC that the 28-year-old was