Deontay Wilder is reckoned to be the hardest punching heavyweight boxer in history - and he has the biggest knockout ratio of all-time to back up that boast.
But the man who must evade those KO blows on Saturday night, Tyson Fury, disputes the Bronze Bomber's right to that hard-hitting claim.
Fury was floored twice by Wilder in their first contest in 2018, but got back up each time.
And after the second knockdown, in the 12th and final round in Los Angeles, Fury actually took the fight to a bemused Wilder.
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"You know, I've felt the power. Ain't so bad," said Fury in a guest column for trade magazine Boxing News.
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"He can't be the biggest puncher in history because he couldn't knock the Gypsy King out, could he?
"I took his best shot flush on the chin and I got back up. He punches hard but I've never been hit by the likes of Earnie Shavers.
"I didn't get hit by George Foreman. I didn't get hit by Rocky Marciano or any of those top guys. I didn't get hit by them so I can't comment.
"So to say it's the biggest puncher in history, I'm not really sure because I didn't get hit by all the guys in history.
"But, you know, I don't think he punches harder than Wladimir Klitschko. Wladimir has a massive knockout punch and has won a lot more fights than Wilder has."
Shavers knocked out 68 of his 74 victims - a couple of points verdicts late in his career diluting his ratio.
The legendary Muhammad Ali once said of Shavers: "Earnie hit me so hard, it shook my kinfolk back in Africa."
While Larry Holmes claimed that Shavers hit even harder than Mike Tyson - he faced them both - and that when Shavers floored him in the 7th round of their 1979 rematch the shot knocked him out and the impact of hitting the canvas actually woke him back up!
But there are plenty of heavyweights who believe Wilder's power IS unique.
Former world heavyweight champion David Haye sparred with Wilder and said: "His punch power is 10 out of 10, that’s it. I don’t know how else to say it. You know when you’ve been hit by him. It’s very different to anyone else.
"He is the hardest puncher I’ve ever been in the ring with."
While Wilder victim Eric Molina said: "Wilder could knock out a bull if he hit it in the head.
"If he touches anybody with that right hand, on any part of the head, they’re going to dance or go down and go to sleep. It is what it is."
Wilder v Fury Odds (thepools.com)
Tyson Fury 10/11
Deontay Wilder 19/20
Method of victory
Tyson Fury on points 8/5
Tyson Fury to win by stoppage 9/2
Deontay Wilder on points 15/2
Deontay Wilder by stoppage 6/5