Tony Bellew named the boxers who could beat Oleksandr Usyk.
“Mike Tyson and Muhammad Ali. One hundred percent. Such style, such elusiveness, such speed. Usyk is not as fast as Ali was in the heavyweight division. Usyk is actually heavier than Ali was. Moreover, noticeably. There has never been a heavyweight with hand speed like Ali’s. Mike Tyson in his prime - he was brutal and merciless, but I think Usyk would do the same with him as he did with Gassiev.”
He also included Lennox Lewis in this list.
