Anthony Joshua’s shock defeat to Ruiz wasn’t a major surprise for Peter Fury.
He was humbled by the Mexican in front of a packed house at Madison Square Garden in June.
The Brit’s defeat was likely caused by having a “red-carpet treatment” his entire life, claimed Fury.
Fury’s son, Hughie – who is currently in Jeddah, Saudi Arabia, for a fight against Samuel Peter – had to work up from the bottom, which makes shock defeats like AJ’s much rarer, he said.
“It’s still a closed shop,” said Fury, who trained his nephew Tyson when he beat Wladimir Klitschko in 2015.
“That’s why Hughie has to take anybody, the hard route, which nobody else wants.
“He has to take fights like Kubrat Pulev in Bulgaria, because he’s not going to get any gravy train. There’s no red carpet for him.
“But we’ve seen what red-carpet treatment does, because when the s*** hits the fan, you come undone and that’s what happened to Joshua.
“All the warning signs had been there for Joshua; Povetkin, Takam, smaller men hitting him clean. The writing was on the wall for him.
“In this game, if you’re only a big heavyweight puncher, you don’t last.”
Joshua is set to try and avenge his first defeat when he fights Andy Ruiz Jr in a rematch later this year.
His promoter, Eddie Hearn, confirmed that they would be triggering a rematch clause in the contract of the original fight, and it would be taking place in November or December.
The pair are currently negotiating a venue for the rematch, with Wembley Stadium, the Principality Stadium and MSG all in contention.
AJ is confident that he’ll be able to overcome the Mexican in the next fight.
He said: “I’ve dealt with some real big losses and I’ve bounced back. Life is a journey. This is boxing.
“What I have to do is re-evaluate the situation, make it better and we go again. We didn’t come this far to stop, we didn’t come this far to fold under pressure. We came this far and I definitely feel like we can go a lot further.”