Mexican-American Ruiz produced one of boxing's biggest upsets when he dethroned the previously undefeated world champion Joshua with a seventh-round stoppage at New York's Madison Square Garden.
Meanwhile, Joshua had said he would want the whole world to bow down for him when he defeat Andy Ruiz and reclaim his heavyweight belts.
Anthony Joshua appears to be ready to conquer the world of boxing again after the British-Nigerian born pugilist shows off incredible body transformation ahead of his fight with Andy Ruiz.
"I know "AJ" has been working on different technicals, he's slimmed down, so we've been working on different things and angles, different pressures and combos, ready for whatever he brings", Ruiz said.
Speaking about the diversity of ticket sales, Frank Smith, CEO of Matchroom Boxing, said: "The matches in which Anthony Joshua participated achieved record sales around the world, whether in London or NY". The pressure isn't on me because I followed my dream, made my dreams come true.
"I know how good I am".
He added: "This upcoming match is one of the biggest boxing fights in the world". It might be a little harder than the first time.
"This is all I've got so when I do awesome things I keep my head on my shoulders, and my feet on the ground". Sometimes fighters lose, it makes them weaker.
He said it will be a clash of styles when he faces Joshua again and believes the former Olympic champion will struggle to fathom an effective strategy. "I felt like I was boxing him around even though I was the shorter guy".
"I think what won him the Olympics was boxing, and I think what won him the world titles against Wladimir Klitschko and everyone else was boxing and being smart, '' he explained according to the report on Sky Sports".
"Win, lose or draw he has a future", Hearn told Sky Sports.