Don't be dishonest like that moron Fencik. Haye pulled out twice with alleged sparring injuries: https://www.theguardian.com/sport/2013/sep/21/david-haye-pulls-out-tyson-fury-fight
And AJ got KO'd by Price. Price never fought AJ in the pros, and Wlad never fought Wilder, but we can still appreciate the work they did for us all in sparring.
Bear in mind all we have here is the testimony of Dillian Whyte: a notoriously unscrupulous character. Banks and Bashir claim that Wlad dropped Wilder but didn't KO him. It was also back in 2011 or so.
He's a beast, I heard he KO'd Fury in sparring and Wlad had to send him home for beating him up. I recall the source being a guy named D. Shyte.
Apart from Tyson Fury, no boxer has defeated Wlad and Wilder. With Lamon Brewster, Corrie Sanders and Ross Puritty retiring, only AJ has a theoretical chance to do it. I would like to see that...
The stories have been corroborated by several people who were there. Wlad gave Wilder a vicious one sided beating and that's why Wilder's handlers avoided talks of a potential undisputed fight w/ Klitschko after he beat Stiverne.