There has been a lot of discussion as to how exactly the knee was injured and whether an Ole Miss defender twisted it maliciously after the tackle. I haven't seen anything definitive. I will say that on the play the tackle didn't seem to jar his knee in a way which one would expect to lead to this type of injury. As he walked off I initially thought it would be a deep thigh bruise or something relatively innocuous.
Regardless, Marlon's career at Georgia ends on a three catch, 113 yard performance during a season where he was finally standing out as the difference maker we had come to expect. Damn good Dawg! Wish him the best in his recovery and hopefully a pro career that picks up where this season left off.