WBA and WBC champion Mikkel Kessler says Joe Calzaghe is in for a surprise when they meet in Cardiff on 3 November.
Mikkel Kessler is confident of winning
Kessler is confident WBO champion Calzaghe's unbeaten 43-fight run will end in the super-middleweight unification bout.
"He is a great champion, but I'm going to beat him," he said.
"I'm going to be better than my last fight - 200% - and he's going to get a big surprise."
Kessler added: "I'm going to show everyone I'm a bigger champion than he is.
"I am almost at my best and at my peak. This time, I'm going to be better than ever.
"I've seen some of his fights and he's never fought a guy like me before, that's why he's going to be in trouble.
"I hit straight, I hit hard, I hit directly.
"He is a nice guy and a nice guy is a bad guy in my world."