There's no doubting Francis Ngannou's one-punch knockout power.
But even then, stepping into the boxing ring and defeating WBC heavyweight world champion Tyson Fury on October 28 would be nothing short of a humongous upset.
One so massive that Mike Tyson is saying it'd be bigger than the upset that he was involved in more than 30 years ago.
"That would be a bigger upset than [Buster] Douglas-Tyson," Tyson told Jim Rome earlier this week, believing Ngannou defeating Fury would outdo severe underdog Douglas defeating him back in February 1990 in Tokyo.
Considering that Tyson is training Ngannou, a former UFC heavyweight champion, for the boxing bout means he'll have a hand in helping put Ngannou over the top.
When asked if Ngannou could withstand Fury's punching power, Tyson turned the debate around.
"[Ngannou] punches like God knows who, man," he continued. "He’s an athlete, he moves quicker, works with his speed, and listen man, he only has to land one or two.
“Tyson’s never been in the ring with somebody that can punch this hard.”