Update: C.J. Anderson to undergo surgery for meniscus tear

Broncos’ No. 1 running back is undergoing surgery in California this afternoon for a torn meniscus in his right knee. This will likely mean the Broncos’ No. 1 running back is headed to IR, as Mike Klis reported earlier today.

ESPN’s Adam Schefter had reported some good news Thursday morning, stating that Anderson’s knee injury was not fully known but there was no ACL tear.

Klis had reported Wednesday that Anderson suffered the injury on the final play of the first quarter.

Just after an 11-yard gain, the running back went down clutching his knee and limped to the sideline. He later returned and finished the game as the Broncos’ leading rusher with 107 yards and a touchdown.

Anderson flew to California on Wednesday for a second opinion on the injury. How bad the tear is and what kind of recovery will be required is not yet known.

Ian Rapoport had tweeted mid-morning that Anderson had told people close to him he was done for the year, to which Anderson responded almost immediately via Twitter that such a report was “false.”

Anderson later deleted the tweets, and it appears Rapoport’s stated outcome could be true.

Coach Gary Kubiak noted that the only thing for certain right now is that Anderson won’t be playing this weekend against the Chargers.

“There’s obviously something they need to go repair, so we need to see what degree that is,” Kubiak said.