Christian McCaffrey has been a key player on the San Francisco 49ers' offense this season. They are currently placed third in the NFC West behind the Seahawks and the Rams with a 9-4 record, competing for a spot in the playoffs. Kyle Shanahan and his team are scheduled to take on the Tennessee Titans in Week 15.

San Francisco 49ers running back Christian McCaffrey was added to the injury report on Saturday with a back injury that will deem him questionable for Sunday's home game against the Tennessee Titans.

The Dallas Cowboys receiver was injured during last week's loss to the Detroit Lions when he went up for a deep pass in the end zone and was contorting his body trying to make a one-handed catch. He couldn't make the catch and then landed hard and his head slammed on the ground.

Christian McCaffrey is still one of the 49ers' best operators.