Andy Ruiz Jr insists he will again defeat Anthony Joshua in their rematch – because the Brit is “not good at boxing”.

The unfancied challenger stunned unbeaten Joshua at Madison Square Garden on June 1 to claim his world heavyweight title belts.

It has set up a huge rematch set to take place in late November or early December with Joshua still considered the overwhelming favourite to avenge his defeat.

But Ruiz is adamant things will be no different – vowing to put in an even better performance to prove his triumph was far from a fluke.

“The rematch is gonna be the same,” Ruiz declared.

“I’m gonna be more prepared, more ready.

“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 h3ll of a fight – Ruiz vs Joshua II.”

Plenty of conspiracy theories have emerged to try and explain Joshua’s unexpected loss after a lacklustre performance at Madison Square Garden.

But Ruiz insists people are overlooking the fact he was simply beaten by a “hungry” fighter who was determined to make history as the first Mexican to win a world heavyweight title.

“I think his people are trying to get something [to explain] why he lost like that,” Ruiz added.

“But he fought a hungry guy, I was hungry, I was mentally focussed for that fight.

“I did not wanna lose in front of my family or get beat up in front of my family.”

Eddie Hearn has confirmed the rematch will take place later this year, with Joshua currently keen on a Madison Square Garden return to right the wrongs of June 1.

A UK stadium fight at Wembley, Tottenham’s new stadium or the Principality Stadium in Cardiff could also happen.