MY OPINION: I have watched the video 6 times now and still think it looks like typical soccer contact. Sometimes they call a foul and sometimes they don't. The ref only got to see it once while he was trying to run and keep up with the action. If the player in white had sold some real or imaginary contact/injury, he probably would have had a chance at getting a foul call. It appears that he hops up and they run up the field without incident other than the player in black patting him on back at the very end. It looks like a good effort by both players showing mutual respect and neither player was hurt. So the ref followed the ball to the next action. If the ref watched it 10 times and saw the catscan results as you have he might have called something. When going into legal shoulder to shoulder contact it is usually a good idea to have your forearm extended a little because you have to put your arm somewhere and it protects your ribs. The player in white swings his right arm over his head as he is dropping down so the player in black really can't gauge where the contact will take place.
What would I do? Help my son get healthy (concussions are very serious). Tell him to protect himself and sell the contact more especially when it is real (i.e. hold your head and roll around in pain). This will demand the refs attention and may get a dangerous player off the field. It also may help you sell your case in future lawsuits. In this one I still would dismiss the case due to unsubstantial evidence.
I will not respond to any appeals. Good luck.
