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Anthony Joshua works up a sweat using chains and ropes in build up to Joseph Parker showdown

ANTHONY JOSHUA is back in training for his unification blockbuster fight against Joseph Parker - and as these photos show, it's a gruelling training camp at that.

Joshua will meet Parker at Cardiff's Principality Stadium on March 31 in a fight that sees four heavyweight title belts on the line.

Anthony Joshua is taking it to extremes in his training for his next fight
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Anthony Joshua is taking it to extremes in his training for his next fightCredit: Lawrence Lustig
Up next, and challenging for AJ's three world titles, is Joseph Parker
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Up next, and challenging for AJ's three world titles, is Joseph ParkerCredit: Lawrence Lustig

It is the second successive fight Joshua will take part in at the Principality Stadium, having defended his IBF, WBA and IBO titles against Carlos Takam there in October.

Joshua is aiming to see off the challenge of 26-year-old Parker before targeting a clash with American Deontay Wilder later in the year.

The aim is to win both fights to become the undisputed world heavyweight champion by the end of 2018 as Joshua looks to seal his legacy in the history of the sport.

Joshua has always been known to have a high-intensity camp before fights, and this time is no different.

The Watford world champ is well-known for having high-intensity training camps
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The Watford world champ is well-known for having high-intensity training campsCredit: Lawrence Lustig
Someone's '0' has got to go when Anthony Joshua fights Joseph Parker next
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Someone's '0' has got to go when Anthony Joshua fights Joseph Parker nextCredit: Lawrence Lustig
Once again, AJ will be heavy favourite to triumph again in his next world title defence
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Once again, AJ will be heavy favourite to triumph again in his next world title defenceCredit: Lawrence Lustig

The Watford boxer has incorporated ropes and even chains into his training as he targets adding another heavyweight word title to his waist.

New Zealand's Parker is undefeated in 24 professional fights with 18 of those wins coming by knockout meaning that after the fight.

Tickets for the blockbuster Heavyweight World title unification clash between Anthony Joshua MBE and Joseph Parker went on pre-sale to Matchroom Fight Pass members at midday on Monday.

They are now on general sale on ahead of the March 31 event live on Sky Sports Box Office.

Tickets for the event are priced at £40, £60, £80, £100, £150, £200, £300 and £600 – with VIP tickets priced at £2000.

Tickets go on sale for the fight by the official ticketing partner, 

Anthony Joshua has three world heavyweight titles, that will be up for grabs on March 31
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Anthony Joshua has three world heavyweight titles, that will be up for grabs on March 31Credit: Lawrence Lustig
Anthony Joshua has become one of the most-talked about boxers in the world
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Anthony Joshua has become one of the most-talked about boxers in the worldCredit: Lawrence Lustig
AJ has only been put down once, and that was against boxing legend Wladimir Klitschko
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AJ has only been put down once, and that was against boxing legend Wladimir KlitschkoCredit: Lawrence Lustig
Anthony Joshua trains hard and says ‘the revolution will be televised’ on March 31 when he fights Joseph Parker in Cardiff
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