But one of them starts the movement (most of the time) and controls the other during the fall. The one that starts and controls the throw is the attacker. If he falls, it may be part of the attack (using his own weight to unbalance the defender even more), so nothing happens to him. The defender, however, will be considered defeated if he falls because he suffered an attack and has not been able to prevent being thrown (because he is not controlling the attacker the same way the attacker is controlling him). Usually the defender has no control at all of what happens during the throw.
@@EricFBG I'm not saying that there's no way to tell who won. I'm saying that unless you know a heck of a lot about judo rules, what you see is two people grappling and two people falling over. Sure, sometimes one person has clearly managed a throw or something, but the rest of the time it's really not clear.
@@BrianFlyingPenguin He was just explaining that it's not that complicated. Usually if someone attacks and manage to do a throw, even if he falls he wins. (now it might be a tiny more complex but that's the basis) :)