@coleman I've never heard of him until now, so I googled and Feigenbutz does seem impressive. I can see why he's a favourite.
Personally, I think the heavyweight British boxer, Daniel Dubois, will continue to rise. He boasts a 91.7% knockout-to-win ratio, but beyond that, the bloke is incredibly entertaining and is ace on the mic. Dubois is only 21 too, so he has plenty of time to make a strong name for himself.