Ricky Hatton has told his fans to brace themselves for a "frightening" encounter when he meets Jose Luis Castillo in Las Vegas on 23 June.
Hatton will be making his second appearance in Las Vegas
And Hatton added that he is as excited about the Castillo fight as he was for his clash with Kostya Tszyu in 2005.
"It can't be anything other than a fantastic fight, it could be quite frightening," Hatton told BBC Sport.
"Castillo, unlike Tszyu, doesn't give ground and fights on the front foot. He's going to stand toe-to-toe."
Manchester's Hatton, 28, admitted he might not have been fully focused for his previous two fights, both world title wins against awkward southpaws.
Southpaws aren't easy to look good against, but this time I'm meeting an orthodox fighter
He was unconvincing in reclaiming the IBF light welterweight belt from Juan Urango in January and some thought he was lucky to win the IBF welterweight crown from Luis Collazo last May.
"Maybe at the back of my mind I took my foot off the gas and my performances were below par," Hatton, who is undefeated in 42 fights, said.
"There's no chance of that this time because I'm fighting one of the best pound-for-pound fighters in the world.
"Also, southpaws aren't easy to look good against so it hasn't been easy to shine. But this time I'm meeting an orthodox fighter.
"I've not felt this excited since I fought Kostya Tszyu [from whom Hatton won the IBF light welterweight title].
"Diego Corrales' fight with Castillo [in May 2005] was one of the fights of the century, and my style's maybe more exciting than Corrales'."
Mexico's Castillo, 33, has 47 wins and seven losses from 55 professional encounters.