Care to explain how!???? Do you even know Duhaupas? The guy can't be Knocked out /period/ He had 34 fights over a decade just to have a random Leoh dismiss his chin! Duhaupas has A+ grade iron chin (which always means a very brave man on a sturdy body) get that right.
lol mate you have a total number of 0 posts about Duhaupas until 12 hours ago and you are merely evaluating him by looking at his resume. If you had watched a few of his fights like I did you'd know there's nothing special about him and that he's too slow and static to evade Wilder's bombs. I suggest you don't make claims such as "The guy can't be Knocked out /period/" for a guy you have never watched a single of his fight before.