CHARLOTTE – The Panthers seemed confident during the bye week that running back Christian McCaffrey was on the right track in his recovery from a shoulder injury.

Now, there’s a new issue to deal with, one of many challenges the Panthers faced when they hit the practice field Wednesday.

McCaffrey was listed as limited in practice with a quad injury in addition to the previous shoulder problem.

“At this point, I don’t know, we have to monitor it day-to-day,” Panthers coach Matt Rhule said of McCaffrey’s status for Sunday’s game against Denver. “I think he might have tweaked it last week, felt good going into today, and got out there and it got tight on him. So we limited him.

“From what I know right now, we’ll handle it day-by-day and see if he’s able to play with the quad.”