The Brit ace locks horns with former Olympic Gold medalist Povetkin in north London tomorrow.
Joshua holds the IBF, IBO, WBA and WBO world heavyweight title belts.
But fellow heavyweight Daniel Dubois has warned that Povetkin will be no pushover.
Dubois should know. The 21-year-old has been Povetkin’s main sparring partner in the build up to the clash.
He told Express Sport: “I handled him pretty well, but come fight night I’m sure he’ll be delivering. He’ll come alive.
“He’s former World Champion and you can’t really get better than that.
“I’m sure he is coming in there with a game plan and a strategy.
“Both men will and it’ll be interesting to see who is going to come out on top.
“Povetkin is very cautious with what he does.
“He studies and is careful with his craft like any artist.”
Joshua will have a considerable height advantage over Povetkin.
AJ stands at 1.98m whereas the Russia heavyweight is just 1.88m.
Dubois insists the height difference will mean little on the night though.
He added: “I’m sure he’s used to dealing with it as a heavyweight.
“But once you get in the ring it really comes down to who’s got more heart, determination and will.
“We’ll see come fight night but I hope both men put in a good performance.”
Povetkin has only lost once in his professional career.
Wladimir Klitschko defeated him in 2012 on points.
Despite Povetkin’s solid record – and a stunning knockout against David Price in his last fight – Dubois reckons Joshua will edge the fight.
He added: “He’s younger, stronger and is at the top of his game right now.
“He’s not going to be easy to knock off.”
Dubois, like Joshua, is unbeaten having turned professional last year.
The 21-year-old says he would love to fight his Brit rival in the future.
“Yeah I’d definitely like to fight him,” Dubois explained.
“But whoever my management team throw me in with first, I have to deal with.
“When the time is right – and everything is about timing in boxing – then that fight would 100 per cent be a massive show.”
* Watch BT Sport Fight Night on October 6 exclusively live on BT Sport 1 from 8.30pm when Daniel Dubois fights former world-title challenger Kevin Johnson in Leicester. Watch live on TV or via the award-winning BT Sport App: bt.com/sport
Source : EXPRESS