ANTHONY JOSHUA and Joseph Parker will go toe to toe in Cardiff tonight in a world heavyweight unification bout.

Watford-born Joshua will be putting his IBO, IBF and WBA belts on the line after his most recent title defence against Carlos Takam in October.

1 Anthony Joshua defended his world titles against Carlos Takam last time out Credit: Jamie McPhilimey - The Sun

Parker boasts the WBO belt and an undefeated record with 24 wins, 18 by way of knockout.

The winner of the fight is expected to face undefeated American Deontay Wilder who holds the fourth belt in the heavyweight division.



When is the Joshua vs Parker fight and where is it happening?

The unification fight takes place TONIGHT - Saturday, March 31.

The 78,000-capacity Principality Stadium in Cardiff will host the event

This, of course, is was where Joshua beat Carlos Takam in October last year.

The main event started at 10.50pm.

Joshua vs Parker: Tips and odds ahead of unification bout ANTHONY JOSHUA has vowed to take his time and pick his shots, while Joseph Parker will be relying to land a big hit, writes Wally Downes Jr. If AJ adopts his calculated approach, Parker will be on the back foot - but regardless of his tactics we back Joshua to win by stoppage. And he could select his shots and KO the Kiwi in the later rounds. But if Parker turns this bout into a scrap, which he needs to do, AJ could land his heavy right hand earlier on. SUN BETS SIGN-UP OFFER: BET £10 GET £30 FREE BET AJ to win by KO - 2/7

AJ rounds 1-3 - 7/2

AJ rounds 7-9 - 3/1

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What TV channel is it on and can I live stream it?

The fight is live and exclusive on Sky Box Office, which is on channel 491 for standard definition and 492 for high definition.

The fight costs £19.95 for UK viewers and 24.95 Euros for fight fans in the Republic of Ireland.

If you book the fight over the phone on Saturday you'll pay an extra fiver - so it'll set you back £24.95/29.95 Euros.

Of course, if you've got mates coming over, you can always split the cost to make it even cheaper.

If you're a sky customer you can book the fight online by visiting the box office website - you'll need your email or Sky username and password - or by booking it through your Sky box.

To order over the phone, call 03442 410888 or 0818 220 225 from the Republic of Ireland.

Live coverage starts from 6pm.

Now TV

NOW TV gives viewers the chance to watch Sky channels without having to pay for a full-blown subscription - and you don't even need to buy a Sky Sports pass to get a ringside seat.

All you need to do is buy the fight through the streaming box office site - go via the NOW TV website to get there - for the same price of £19.95.

Then download the Sky Sports Box Office app from the NOW TV app store.

Log-in using your Box Office account details and you'll then be able to stream the fight from your box.

Other streaming services

If you don't have NOW TV, you can still stream the fight online to your tablet, phone, laptop, PC or Mac.

Again, buy the fight on via the box office website - you'll have to create an account and pay - and select which device you want to use to watch the fight on.

Check the box office website to make sure your device will be able to stream it.

And, of course, we'll keep you posted here on SunSport.

talkSPORT is the only place you can listen to radio commentary of the huge heavyweight showdown between Anthony Joshua and Joseph Parker.

Adam Catterall, Dom McGuinness, John Rawling and Glenn McCrory will be ringside at the Principality Stadium to bring you live coverage from 8pm. Listen on DAB, through Sky Channel 0108 or on talkSPORT.com here.

What did the fighters weigh in as?

The bigger man Joshua tipped the scales at 17st 4lb during Friday's weigh in, nearly a STONE lighter than when he fought Carlos Takam last October (18st 2lb).

Parker the smaller of the two at 16st 12.5lb.

Who is on the undercard?

Alexander Povetkin vs David Price

Ryan Burnett vs Yonfrez Parejo

Josh Kelly vs Carlos Molina

Joe Cordina vs Hakim Ben Ali

Anthony Crolla vs Edson Ramirez

Morgan Jones vs Mose Auimatagi Jnr

Sean McGoldrick vs TBA

Joshua Buatsi vs TBA