Originally Posted by doublelegtakedown
by overhand do you mean like a chuck liddel KO punch with the whip of the fist like a clock at the end of the motion?
It doesn't have to be as dramatic as Chuck's punch. It is sort of like a cross with a vertical hook. I don't know how much that helps. "Performed in a similar motion as the hook, it is done in a manner so the blow lands from a vertical angle rather than a horizontal one. It involves leaning the upper body sideways while rotating the striking arm towards the target. It is useful in surprising an opponent who is suspecting a more 'orthodox' punch." Found this on a boxing website. I guess the punch is hard to explain with out a visual. I will look for one.