Deontay Wilder has more ways to beat Tyson Fury since their last meeting, according to his new trainer Malik Scott.
Scott was brought into replace Mark Breland, fired by Wilder after his defeat to the current WBC champion in February 2020.
Wilder and Scott have been trailing their sessions on social media as the Bronze Bomber looks to reclaim the title in their trilogy rematch on October 9.
Talking at the press conference ahead of the fight, Scott said: "I'm a student of the game obviously.
"Deontay, in my opinion, has ruled the heavyweight division, had 10 defences and was just using one weapon, and on certain occasions he'd use two or three. He got content with knocking people out with one weapon, which was the right hand.
"What I did was I went to his toolbox and pulled everything out that he does well. Deontay Wilder can do it all. I just pulled a lot of stuff out of him in training camp. I made sure we drilled him with intent."
Wilder praised his new trainer, and said their friendship had been strengthened by the partnership.
"I trust my brother with my life as he trusts me with his. I'd give my shirt off my back as he would for me. That's how it's always been from the first connection," he said.
"Even when we fought each other, it brought us even closer than ever. In boxing, you need people that you can trust in this sport.
"This is a money-driven sport. You just never know who may be jealous, who may envy you in certain ways."