Um Deontay Wilder. He who when jabbed, steps back on the wrong foot, in a straight line, with his eyes closed, chin up and arms flapping? Wlad after seeing him do that after 3 or 4 jabs, moves a touch closer throws a feint-jab, waits for the eyes to close and follows it with his nuclear straight right on the exposed chin. It doesn't matter if it's glass. That punch is sleeping Wilder purely because he has absolutely zero idea of boxing fundamentals.
Klitschko destroyed Wilder in sparring and got him a cake to cheer up Deontay who was devastated after being floored twice: http://www.fanphobia.net/uploads/actors/26524/deontay-wilder-birthday-pic.jpg
We already saw the sparring. Deontay cannot handle Wlads power, and was knocked down by a jab and a left hook on two separate ocassions. Deontay is not even top 5 HW material today, and comparing him to Wlad is an insult to Wlad's legacy as number 1 HW of the last era.