you guys are tripping, overhand rights are great and very useful. you might be confusing lead rights with them but even lead rights can be useful as ali showed with foreman. if done properly, overhand and underhand rights are the best counter for a jab. Tim witherspoon was advised to hit larry's ribs when he jabbed, simultaneously, he did it well, winning the fight in many people's estimation. also, with the over the jab rights there are a couple points where if you time it well, it can end a fight if you have the power as tyson and many, many others have done. with the opponents left arm and commitment, they often aren't paying attention and couldn't see a right until it's too late anyways. Of course some of it is how much speed you have, a guy like roy jones wore out the overhand, tyson ended fights with it many times.