Cary Edmondson-USA TODAY Sports

Cary Edmondson-USA TODAY Sports

Earlier today, Adam Caplan of ESPN reported that the injury to San Francisco 49ers CB Chris Davis is "not looking good," according to a source.

Davis left Thursday night's game against the Arizona Cardinals in the third quarter with a knee injury. As of Friday afternoon, Kelly didn't have any injury updates on his players. However, he did believe that Davis was getting an MRI to check the severity of the injury.

If you watched Thursday's game, you likely remember Davis from one unspectacular highlight. He opened the second half of the game by fumbling the football on the opening kickoff. Arizona recovered at the San Francisco 14-yard line and after three plays, lost a yard and kicked a field goal. However, CB Rashard Robinson ran into the kicker and kept the drive alive. On the very next play, RB David Johnson ran into the end zone for a 4-yard touchdown and gave the Cardinals a 14-7 lead to open the half. It was considered to be a huge momentum boost for Arizona as they went on to beat the 49ers 33-21.

Davis, a former player for the San Diego Chargers, signed with the 49ers' practice squad on November 3, 2015. He was promoted to the active roster four days later.

In 2014, Davis was acquired by the Chargers as an undrafted free agent out of Auburn.