My thinking is that is that it is most likely ACL. If you look at the mechanism of injury, it's a classic pivot shift. I would not be surprised if it was a partial tear. The knee did not look immediately swollen and was stable enough that he walked off the pitch and he hasn't been wearing a knee brace. The question, I think, is whether he needs a full reconstruction or ligament augmentation. I don't think rehab will cut it. I suspect that is why he is getting multiple opinions. If it were a complete ACL rupture, there would be no debate regarding the surgery. Lateral or Medial collateral would not usually need surgery. A PCL injury is usually a major event, so it's not that.