Callum Smith believes he has the skills in the ring to beat Artur Beterbiev tonight.
Smith and unified light heavyweight champion Beterbiev fight in Canada, with the Briton a stark underdog ahead of the clash.
Nevertheless, Smith has fought some tough names in the past, including George Groves and Canelo Alvarez, and has also been super middleweight world champion.
The current champion at 175lbs has 19 knockouts from 19 fights and is clearly a dangerous opponent, and speaking to Sky Sports, Smith acknowledged it was a huge test to face up to.
"I do see it as the toughest fight of my career, mentally and physically. I'm preparing myself for that. I'm here for the toughest fight of my career," he said.
"He's beat some good fighters. Obviously Anthony Yarde last time out, [Oleksandr] Gvozdyk for his WBC title, Joe Smith for his WBO, he has beat some good opposition.
"But I do believe I'd have beaten everyone he's faced so far and I believe stylistically I pose more of a threat than any of his previous opponents."
He added: "He's knocked everyone out he's ever faced, so that deserves respect.
"He's probably got underrated boxing ability as well. He was world amateur champion.
"I think it probably gets overlooked because of all his fights ending in a knockout but he's got good boxing ability as well.
"But he's not invincible. He has been hurt, he can be hit. He's not the most elusive fighter. Whenever I'm watching boxing fights I always imagine myself in with them and what I would do different to his opponent.
"I've always watched his fights and although I see the dangers, I also see the openings, the gaps, the faults. I feel like I've got the style to take advantage of them."