Carolina Panthers star running back Christian McCaffrey left Sunday's game versus the Tampa Bay Buccaneers after limping off the field following his second touchdown of the day with 13:25 remaining in the fourth quarter.
McCaffrey was listed as questionable to return with an ankle injury and did not return in Carolina's 31-17 loss.
He has been seen trying to test out his ankle on the sideline and having it wrapped up by a trainer.
McCaffrey had two touchdowns along with 59 rushing and 29 receiving yards before he left the game.
A plethora of NFL players were injured on Sunday including Saquon Barkley, Raheem Mosert, Nick Bosa, Sterling Shepard, Solomon Thomas and Jimmy Garroppolo.
This is a developing story.