Kadour Ziani’s vertical has been much hyped on the internet, but isn’t as tremendous as the claims. I’ve never seen any evidence that he can jump more than about 46" (running), but I’d be happy to see some. The claims of 56" or 57" or 58" are not at all realistic. That would put his head 6" above the rim; I’ve never seen a video that shows his head at the rim, and I’ve looked.