Anthony Joshua fights Robert Helenius at the O2 Arena tonight, as the Finn steps in for Dillian Whyte on seven days’ notice.

Joshua was set for his third clash with Whyte here, having lost to his fellow Briton as an amateur before knocking him out in 2015. However, Whyte returned an adverse finding in a drug test last week, leading him to be pulled from tonight’s main event. Helenius, a former sparring partner of “AJ”, steps in, just seven days after having fought and won in Finland.

With that early stoppage of Mika Mielonen, Helenius bounced back from a first-round loss to Deontay Wilder, who was left in tears after stopping the 39-year-old in the first round in October. Meanwhile, Joshua, 33, last fought in April, beating Jermaine Franklin on points to respond positively to two straight losses to Oleksandr Usyk.

Can the former two-time heavyweight champion stay on track for a potential bout with Wilder? We’ll find out tonight in London. Follow live updates and results from the main event and undercard, below.

Today’s press conference in London ahead of this weekend’s heavyweight main event between Anthony Joshua and Robert Helenius at The O2 Arena Live Worldwide on DAZN. (photos by Mark Robinson)

On a night of heavyweight action in the Capital, IBF Mandatory World Title challenger Filip Hrgovic clashes with Australia’s undefeated contender Demsey McKean, Fan favourite Derek Chisora returns to the scene of so many of his famous wins to take on America’s Gerald Washington over ten rounds.

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And Romford sensation Johnny Fisher has the opportunity to land his first belt when he faces off with Torquay’s Harry Armstrong for the vacant Southern Area Title.

Elsewhere on the card, Hyde Super-Lightweight Campbell Hatton takes on Hitchen’s Tom Ansell over eight rounds, Billericay Middleweight prospect George Liddard goes for another knockout against Bas Oosterweghel, Wales Featherweight talent Brandon Scott (5-0, 1 KO) makes his Matchroom debut against Shepshed’s Louis Norman and Eltham Super-Flyweight Maiseyrose Courtney faces her toughest test against Bournemouth’s Gemma Ruegg.