Andy Ruiz Jr has called Anthony Joshua a bad boxer in a brutal assessment of the Brit's ability.
Ruiz Jr shocked the boxing world after dethroning Joshua and the heavyweight king reckons he'll beat him again when they meet in the rematch.
They're set to run it back before the end of the year and the Mexican-American is highly confident ahead of their rematch.
The 29-year-old believes he'll reign victorious and he's savagely taken aim at Joshua.
"The rematch is gonna be the same. I'm gonna be more prepared, more ready," he said.
"I know his flaws, I can do a lot better. I think the only thing he can do is just run around.
"He's not good at boxing, he's not a good boxer.
"It's going to be a hell of a fight - Ruiz vs Joshua II."
Ruiz Jr added: "I think his people are trying to get something [to explain] why he lost like that.
"But he fought a hungry guy, I was hungry, I was mentally focused for that fight. I did not wanna lose in front of my family or get beat up in front of my family."
Tyson Fury, who recorded his 28th professional victory against Tom Schwarz over the weekend, is also siding with Ruiz Jr.
"His [Joshua] style and his [Ruiz Jr] style aren't made to go together and Andy will always beat AJ in my opinion," he explained.
"I looked at Joshua and I seen that he didn't want to be in the ring on the night. He was looking away he had other things on his mind.
"From round one I could see what was going to happen. I looked at Joshua and he didn't have no water, no sweat on him and I thought this guys is going to get knocked out."
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