The Tyson one was more of a overhand right and that guy was asking for one but moving towards Tysons rear arm with his front arm down Tyson did well to get him to react to the front low jab at the same time ,a straight left jab into Mikes face when he threw his left low would of helped against that happening.

The other one looks like a leaping long hook, hard to defend againt it cause you only throw one around someones arm that you've gone under so that they dont see it coming when they are themselves already committed because the move is such an over commitment in itself; ,this guy did well cause its a ko hit if you miss seeing it.

If you have balls to stay in the zone and practice it and get it down, you can leave your left out where it is, drop the elbow slightly and turn ever so slightly and face where that leaping hook is coming from; that way it cant get around your extended left arm and you are still in the zone in better reach for your right and you can deck them with a ripping right cause they are flying and their left is out of play and then they are then the one who is over committed.