No, you decide what he does. He stops, collects himself, goes on the defensive for a few seconds (could be anything from 5 to 30 seconds basically). Then when he's wiped the blood out of his eyes, taken a look around and figured out what he needs to do, maybe watched his opponent a bit to figure out what to do next, etc, then he goes back into the fray full force with new determination.
What, you don't think people stop, collect themselves, 'get it together' and then throw themselves back into it with renewed vigor? This is so basic and classic a thing to see in sports for instance. Heck, most sports have a rule that lets everyone pause and collect themselves every so often. Sports aren't as extreme as combat, we need not assume every football players takes an SW after every play, but you can practically point out the moment when it happens. I remember Joe Montana getting some monster hit and he's lying on the ground shaking his head, and then he just slowly stands up, shakes himself, trots back to the huddle and then throws a touchdown. What is that, clerical healing???!!!!