Amir Khan has promised to upset the odds when he faces Saul 'Canelo' Alvarez in Las Vegas in May.
Earlier this month, it was announced that Khan will take on Alvarez for the WBC middleweight belt, the Brit preparing to make the step up from welterweight for the bout.
Many are tipping Khan to be well beaten by the Mexican, whose only defeat from 48 fights came against Floyd Mayweather Jr - a man Khan has previously sought a date with, to no avail.
"It's a huge fight," Khan said at Monday's media conference in London.
"We're looking forward to this fight. You're going to see a different Amir Khan in this fight. This is my time to shine. I'm really going to prove a point. I'm going to show the world who Amir Khan is.
"I take his power, take his speed... I believe what will win this fight is the movement, the speed and also ring generalship. I'm going to win this title.
"I remember when I was 17 and going to the Olympic Games [in 2004] I was the underdog and no-one ever expected me to do anything.
"I was a young boy, supposed to get beat by these men and they thought I shouldn't have gone there.
"And that's what it seems like going into this fight against Alvarez, a lot of people are saying 'Amir is going to get walked through, Alvarez is going to walk right through him'."
Alvarez, meanwhile, insists he will have to be at the top of his game to see off the challenge of Khan.
"I've received a lot of great support here," he said. "I know that he's a serious fighter and a serious threat and I'm going to give it my all to give a great performance."