After Oleksandr Usyk Retires, Who's the Heavy Champ?

With unbeaten World WBO, WBC, WBA, and IBO World Heavyweight champion Oleksandr Usyk potentially retiring soon after defeating former champion Tyson 'The Gypsy King' Fury again, who does that leave as the world's heavyweight champion? read article After Oleksandr Usyk Retires, Who's the Heavy Champ? @ Boxing News 24