Tony Bellew admits he is fighting against the odds once again but believes he can break the heart of Oleksandr Usyk at Manchester Arena on Saturday.
Ukrainian Usyk has an unbeaten professional record and is the first boxer to hold all four cruiserweight titles.
All are on the line this weekend, and Bellew told Sky Sports: "I'm just looking forward to Saturday night. He's an amazing, exceptional champion and I'm so happy we finally made this fight.
"Some people think I'm deluded and I do myself sometimes. I look at him and the shape he's in and the muscles and the six pack. Once again I look in the mirror and see Mr Soft. But I'm just willing to give it a go, give it everything I've got.
"I genuinely believe I'm going to break his heart, I'm going to find a way, and I'm going to get past him.
"I'll take an awful lot from the big fights I've been in. Going and beating David Haye not once but twice. The amount of pressure I felt going into the Goodison Park fight, nothing can equal that, nothing can even get close.
"There's no pressure on me going into this. The megastar has turned up. I'll leave him to do what he's doing, let him juggle the balls and do his crazy dances. He looks great, but I'm going to punch him in the face with everything I've got on Saturday night."