Joseph Parker

While much of the pre-fight hype has surrounded Joshua's power, it’s Parker's speed that has his boxing trainer confident of a knock-out win.

Speaking to Andrew Gourdie and Jim Kayes on RadioLIVE, Barry revealed fans should expect a much faster, but no less powerful, Parker in Wales.

"More movement and faster feet…that’s something that we’ve worked on this whole training camp from our flexibility work to our strength and conditioning work, boxing work to our road work," said Barry.

Between them the three fighters own the four major belts in the sport's glamour division, with Joshua holding the WBA and IBF crowns, Parker the WBO and Wilder the WBC.

With 20 knockouts from a perfect 20-0 professional record, Joshua is favoured to continue that march and add another belt to his collection when he and Parker square off in a much-anticipated unification bout in Cardiff on April 1 (NZ time).

The Kiwi heavyweight has used the cruel jibe from British talk show host Graham Norton and picked up by Joshua as motivation for his preparations for their world heavyweight unification fight.

WBO champion Parker tangles with WBA and IBF champion Joshua in Cardiff on April 1 (NZT) and the 26-eyar-old is determined to be in the shape of his life.

Five weeks into his Las Vegas training camp, the signs are promising with Parker quickly losing weight and regaining his trademark speed.

Parker is set to face his toughest opponent yet when he fights English boxer Anthony Joshua in Cardiff, Wales on March 31 (April 1 NZT).

Barry says there'll be no excuses for losing against Joshua.

 “We think there’s never been a greater time to fight Anthony Joshua and if we don’t win this fight on March 31, it’ll be because Joe’s simply not good enough."

“We think this is the right time and the right guy at the right time.”

Parker agrees and admits 2017 wasn't the best year in boxing for him.

Parker will put his WBO strap on the line at the Principality Stadium, while Joshua's IBF and WBA belts will also be draped around the victor on March 31.

The pair will finally come together after months of negotiations between the representatives of both camps, the bout confirmed early in 2018.

Ahead of the fight Joshua said he hoped Parker would be fit enough to go the distance in their 12-round contest, and Parker has provided an update that should please the British boxer.

"Training has gone really good," he told Sky Sports News at his Las Vegas training camp.

The highly-anticipated bout will see Joshua and Parker put their IBF, WBA Super, IBO and WBO belts and unbeaten records on the line, as both fighters aim to become the first undisputed heavyweight champion since Lennox Lewis in 1999.

Many pundits out of the UK believe Joshua's size and skill will prove too much for Parker at the Principality Stadium on April 1 (NZ time), but Wilder has a different perspective.

Speaking to Andrew Gourdie and Jim Kayes on RadioLIVE's Sunday Sport, Wilder issued a warning not to be deceived by the Briton's chiselled physique.

The 26-year-old is not convinced the 6ft9 Briton offers much insight into the type of bout they can expect in Cardiff.

Speaking to Andrew Gourdie and Jim Kayes on RadioLIVE, Parker admits he appreciates the support, but is happy with the sparring partners they have assembled.

"Tyson Fury's a great guy, but with all due respect to him, I don't think it's the right person to spar because he moves around well for a big guy and he doesn't come forward, and he's a lot taller.

The world champ spoke to Mantis on Niu FM Breakfast live yesterday from London, after appearing at his first pre-fight conference with Joshua in London.

Parker stood face to face with his opponent for the first time since the announcement of the fight.

He says he's happy the talk is done because he hasn't been feeling like his genuine self.

“Now that the fights locked in, it’s back to the person that I am, so some of the things that I said and the way that I acted, it wasn’t really me and I felt uncomfortable doing it,” he says.

WBA, IBF and IBO heavyweight champion Joshua and WBO belt-holder Parker are set for a unification bout at Cardiff's Principality Stadium on March 31 in a hotly anticipated clash.

In November, before the fight had been agreed, the Parker camp released a video which showed Joshua being knocked down during his amateur days, as well as clips from former sparring partners claiming they had floored him.

At a media conference on Tuesday, Parker's promoter David Higgins spoke up about the issue.

At least, that's what Sala Parker keeps telling herself.

The 26-year-old South Aucklander's title unification fight against Anthony Joshua was finally made official late Sunday night, with an April 1st (NZT) date booked for Cardiff's Principality stadium.

It shapes to be the biggest stage arguably any New Zealand sportsman has ever appeared upon, with an audience of over 80,000 inside the stadium and the eyes of the wider sporting world certain to be tuned in.