How do you throw an overhand right?

[boyla]

In my opinion, disclaimer :P

It is a hook type punch, so does not come directly downwards.
It arcs, down and around.

You want to close the distance, step in with lead foot, sort of slip inside as if avoiding the jab(outside for southpaw) and crouch down body over front leg.
Overhand punch comes over and around the guard, additional power generated by bringing the body down.
Movement finishes you will be close to opponent, head near chest.

You can close the distance, but punch is thrown within hooking range, not considered a long distance punch
Is a hook type punch, so does not operated like a inverted uppercut.
You rotate your hips to generate power as in a hook.

For southpaw, you want to be within striking distance, move forward with right foot, so right foot is outside opponents lead foot, move as if slipping outside a jab, bring torso down over your right foot, throw bent left arm in a downward motion to opponents chin. Finish head low near opponents chest.
....
Hope that helps, there are different interpretations, I posted a similar response to a similar question will try and find thread, not sure If I described it worse or better

http://www.saddoboxing.com/boxingfor...-overhand.html