Joseph Parker Vs Anthony Joshua Heavyweight Unification Fight: Everything You Need to Know

British heavyweight champion Anthony Joshua will fight in a unification bout against New Zealand's Joseph Parker in March.

Joshua (20-0-0) has not been back in the ring since he knocked out 37-year-old French heavyweight Carlos Takam at the Principality Stadium in Wales in October.

That victory saw 28-year-old Joshua defend his IBF and WBA titles for the first time since he beat Wladimir Klitschko at Wembley Stadium in April.

So with his titles on the line, and looking to take the WBO championship from Parker, here's everything you need to know about the fight and Joshua's opponent:

When is it happening?

March 31.

Where?

Joshua will be back at the Principality Stadium, also known as the Millennium Stadium, which is in Cardiff, Wales. It was opened in 1999 and holds 74,000 people.

What belts are they fighting for?

Joshua will have the opportunity to win the WBO title from Parker but he is putting his IBF, IBO and WBA championships on the line.

What's Parker's record?

Parker, just like Joshua, is undefeated. It will be champion against champion, with one undefeated record set to end. Despite being two years younger than Joshua, he has had four more fights (24-0-0).

Where is Parker from?

The 26-year-old was born in Auckland, New Zealand, but now lives in Las Vegas, Nevada, United States.

Anthony Joshua and Joseph Parker
Anthony Joshua, left, and Joseph Parker at Dorchester Hotel, London, January 16. The two heavyweight champions will fight on March 31. Justin Setterfield/Getty

What has he said about the fight?

Parker has promised Joshua won't enjoy his return to the Principality. "Anthony Joshua is in for a huge shock," Parker said. "A couple of months ago I heard him say: 'Why should I be worried about this little kid from New Zealand?'

"Well, now he's about to find out. And the world is about to find out whether AJ can really take a punch."

Has Joshua been his usual, relaxed self?

Sort of. Parker's team claim Joshua has been rattled after they said he had a "glass chin," having hit the canvas during his career while Parker hasn't. But Joshua, of course, had a response. "All those times taught me it will take more than a human to stop me going where I'm destined to be," he said.

"What I have learned from those times of adversity and going through storms is that it will take more than any human to stop me on this journey."

"It's about making history now, we have always been moving in that direction so it's an honour to be up here with another world champion. But in terms of Parker, I don't really know how to take his camp."

Has Parker ever had a fight in the U.K.?

Yes, his last fight, in fact. His last bout took place in September at the Manchester Arena against Hughie Fury, Joshua's compatriot and cousin of former heavyweight champion Tyson Fury. The fight ended in controversy, with Fury's camp claiming the defeat on points was "corruption" in scoring.

So, are Parker's team confident?

It doesn't sound like it, if you listen to his trainer Kevin Parry. "My challenge to my fighter," Barry said, "is I need this to be his greatest performance.

"If he can show the public and Anthony Joshua what I see in the gym when he's at his best, he's a very hard guy to fight. If Joseph Parker doesn't bring his A-game, it's going to be a very difficult night."

Any predictions been made?

Well, Tyson Fury has, of course, given his opinion. The former heavyweight champion, who has called out Joshua, believes his fellow Briton will lose his winning-record as he backed Parker. "He's young and ambitious, he's got fast hands and he hits hard," he told the Pound for Pound podcast.