you cannot knock someone out in one punch except with one of the next: bone break, internal/external hemorrhage, cartilage break, skin rupture or death. It is true that you need a lot of force to knock someone out with punchES. I intentionally highlighted "es" meaning that without seriously being injured no one can get one punch and get down. But to answer you question. Hit the nose head on the tracheae and/or the jaw. concentrate on the head but avoid the face.
You knock someone out in one punch if you punch them with your knuckles in the side of the chin hard.
Knockout punch them
In the street
it is where you get to fight people and they can knock you down with one punch
A punch can be used to mark small holes as a guide to drilling, it can knock out bolts from a tight hole and it can knock precut panels from electrical boxes.
A powerful punch to knock someone out with.
The joke where the punch line is mop is Knock knock. Who's there? I eat mop. I eat mop who? That's disgusting.
jaw breaker!
The baddest punch of all punches first you throw like you're throwing a rank baseball with all your might then you knock em out with the punchiest punch you got
It can kill or knock out a human
TO SHOW THAT THE OTHER BOXERS PUNCH WAS NOTHING
big show. it takes one knock out punch to win.