Vertical Face Plant

Ultimate Frisbee is a game played on the honor system. There is no referee - the players are supposed to call their own fouls, out of bounds, etc.  My son (in yellow shorts) was going up for the disk here  when he was slammed by this player who, amazingly, said he didn't foul him.

This play ended my son's ability to finish the tournament - off to the doctors today.....

UPDATE:  No frisbee practice for the next three days, heat and ice for his strained and swollen hamstring. No biggie thankfully.