Anthony Joshua expects Deontay Wilder to stop Dominic Breazeale - but hopes his rival doesn't better his own result.
Wilder defends his heavyweight world title against his fellow American in New York on Saturday night.
It will be his first fight since his controversial draw with Tyson Fury last December.
And Joshua, who beat Breazeale in seven rounds in 2016, and expects Wilder to do the same.
"Styles make fights, I think Wilder will fare well against Breazeale," he told Sky Sports.
"I think Wilder is too quick, he's a very, very fast heavyweight, but Breazeale is tough, took me seven rounds.
"I hope Wilder does it in nine, so I can be like, 'hey I done it earlier'. You know how it is, comparisons and stuff, but yeah it will be interesting to see.
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"You look at the small things, I look at the small details – when he's getting tired, how many right hands he throws in a round.
"I look at something different, rather than comparisons to the rounds."
Wilder, meanwhile, has courted controversy again after insisting he doesn't care if he kills Breazeale in the ring.
The champion has repeatedly said he wants a "body on his record" and reiterated his claim.
"This is the only sport in the world where you can kill a man and get paid for it at the same time, so why not use my right to do so?” he said.
“Dominic Breazeale asked for this. I didn't ask for this, he asked for me.
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"If it comes, it comes. This is a brutal sport.
"This is not a gentleman's sport, we don’t ask to hit each other in the face, but we do anyway.
"You can ask any doctor around the world and he’ll tell you the head is not meant to be hit.
"Anyone can go. And on this particular time, we’ve got real bad blood against each other.
"I can’t wait. Like I said, he’s like a fly in my ear. I can’t wait to get him out.
"It’s going to be in dramatic fashion, in a fashion nobody has ever seen. His life is on the line, and I do mean his life.
"I'm still trying to get me a body on my record."
