Mikkel Kessler is banking on youth to overcome Joe Calzaghe's experience and hometown support in Saturday's bout to decide the best super-middleweight fighter in the world.
The 28-year-old Kessler (39-0) will put his WBA and WBC titles on the line against the WBO belt of Calzaghe (43-0), and says his seven-year advantage could be a deciding factor at Millennium Stadium.
"I'm young and fresh and my career has gone so well up to this point," the Dane said on Wednesday. "It is a dream come true and a big step up for me. We are two unbeaten champions and it is going to be a great fight."
Calzaghe has defended his title 21 times since winning it from Chris Eubank 10 years ago. Kessler, who has been a world champion for three years, was asked what were Calzaghe's weaknesses.
"His age," Kessler said. "Joe's a great fighter and a gentleman. He has always kept himself in good shape and looked good in his last fights. He is a great fighter and I know we will have a great, hard fight."
Kessler will also have to contend with 50,000 Welsh fans cheering for Calzaghe inside a cavernous rugby stadium that will have its roof closed.
"I know the crowd will be against me and I would have loved to have the fight in Denmark," Kessler said. "But I'm not afraid to fight outside my home country and I have done it before."
"It's always a goal to get outside your own country and get people from all around the world to know you and know your fights, and this fight is going to be shown in many countries," he said.
The fight is scheduled to start at about 1:30am on Sunday for the benefit of live screening in the US on HBO.