The initial diagnosis was made after preliminary tests were performed on Charles' knee after he left the game. The Chiefs will know more about the injury once he undergoes an MRI.
Charles went to the ground grabbing his right leg after a non-contact injury before being helped off the field. He was cutting when his right knee appeared to buckle.
Charles had 58 yards on 12 totes and had a beautiful 26-yard reception, during which he put on a jaw-dropping, stop-and-start move to burn a defender.
Ironically, we just had a news item this past week about the Chiefs RB2. In Charles' absence, the Chiefs relied on Charcandrick West. Knile Davis, who hasn't played an offensive snap in two weeks, helped shoulder the load, but it wasn't enough to beat the Bears in Week 5. West could be the back to own going forward if Charles is out, but Davis could end up with some work as well and has proved in the past he can carry the load. At least right now, it doesn't appear to be all that clear-cut of a situation.