Anthony Joshua is sparring with fighters who are similar to the size and style of Andy Ruiz Jr, Eddie Hearn revealed.
The former champion is aiming to reclaim the world titles he lost to Ruiz Jr last June, in what was one of boxing’s biggest ever upsets.
Joshua admitted to underestimating Ruiz Jr before their first fight and his promoter, Hearn, confirmed “chubby” fighters had been drafted into camp to replicate the Mexican’s style.
“It’s madness. There’s eight weeks to go, and he’s been in camp for four week already,” Hearn told Fino Boxing.
“A lot of early sparring now in replicating the style of Ruiz.
“Last time we had probably three weeks of sparring, and it was tough to find a guy like Ruiz, because there aren’t many like him.
“Small, a little bit chubby, fast hands, and really good on the inside.
“Now we’ve replicated that, and I feel like the preparation is going to be great. Andy Ruiz is in camp.”
While Joshua steps up his preparations ahead of the December rematch, Ruiz Jr has warned his rival he will not be the same fighter when they meet again in the rematch.
Ruiz Jr weighed in at 268lbs for the first fight with Joshua, the heaviest the 30-year-old has been since 2010.
“I will arrive in better condition…. lighter, faster and more powerful,” Ruiz told ESPN Deportes.
“People will always talk like this, but I have faith that we’re going to win and shut up more mouths.
“I have a lot of respect for Anthony, outside the ring he is a very good man.
“But inside [the ring] there are no friends, there is no respect or anything. It will not be an easy fight.
“I think it will be a hard fight, but nothing is easy in life, so we are training very hard. We will be prepared for whatever he brings.”