Carl Froch and George Groves have each promised to knock the other out in their eagerly-awaited world title fight.
The pair squared up at a press conference in Manchester ahead of the November 23 bout at the city's Phones4U Arena, at which Froch will defend his WBA and IBF super-middleweight belts against his fellow Briton.
The Nottingham fighter, 36, is adamant the fight has come too soon for an opponent nearly 11 years his junior and who he labelled as having "a glass jaw".
He told Press Association Sport: "He could have probably done with a couple more fights against some higher-ranked opposition than the ones he's been fighting before he took on a challenge of this magnitude.
"We saw Floyd Mayweather against Canelo Alvarez at the weekend, that's an example of someone who's in their early 20s against someone who's 35 or 36 with bags of experience at the top level.
"Alvarez has had maybe 40 fights so he's got plenty of experience, and he got the floor wiped with him by Floyd Mayweather.
"I'm not saying I'm Floyd Mayweather, but (Groves) is not Alvarez. So it's a similar comparison and you saw what happened in that fight, it was a bit of a mismatch and that's what this could be.
"But it's not going to be boring because I'm going to do what I do - land big shots.
"George Groves has got a glass jaw so when the big shots start landing, the jaw's going to shatter and he's going to hit the canvas, so the fans are in for a real treat."
The unbeaten Groves, though, countered: "It's a step up, but it's one that I'm more than ready for.
"I've only boxed maybe one other as experienced as Carl Froch but he isn't going to get any better and I'm more than enough to beat him, and that's what I plan to do."
And the Londoner also set his sights on ending the fight early.
"I always plan to knock out my opponents," he said. "I always believe they won't be able to live with what I'm going to bring.
"Sometimes it takes a few rounds to break them down and get them to make mistakes, other times they make those mistakes for you and you make them pay early.
"I wouldn't be too specific with a prediction but I guarantee that he will not hear the final bell."
Neither fighter made any attempt to hide the bad blood between them, much of which stems from Groves' decision to spar with Mikkel Kessler before the Dane's rematch with Froch in May.
Froch said bluntly: "I've got no respect for George Groves as a person.
"He's not shown the champion, me, a four-time world champion, the respect I deserve. He's talked very disrespectfully to me.
"He's doing that out of his own choice. He could just say I'm a great fighter, I've fought the best of the best and come through.
"He could do himself a few favours there but he's choosing not to, he's choosing to be disrespectful and play it down - it probably makes him feel like he's in the fight a little more."
Groves dismissed that suggestion and maintained he had done nothing wrong by sparring with Kessler.
"It's typical Froch with his superiority complex, (to think) how dare someone go and help the guy he's fighting," he said.
"I was going out to get myself some sparring because I was fighting on the same night (against Noe Gonzalez on Froch's undercard).
"I think Froch - knowing that somewhere down the line, we could end up meeting - was trying to paint me to be the bad guy and unpatriotic. Fight fans in the know were pulling his argument apart.
"That was a touch of him anticipating that we were going to fight, and he wanted to get me bad press, and also the fact that he does believe he's above and beyond the rest of British boxers and 'how dare someone step out of line against Carl Froch?'.
"He's calling me disrespectful but I'm not sure exactly what disrespect I've shown him. He believes it's disrespectful that I've actually taken the fight because he believes he's that much beyond me.
"I think he's confusing disrespect with fear, and the fact is I don't fear him. I do respect him, but I don't fear him because I know what he is and I know I can beat him."