Will Anthony Joshua keep his WBA/WBO, IBF, IBF, and IBO world-heavyweight belts?
Anthony Joshua v Oleksandr Usyk Venue: Tottenham Hotspur Stadium. Date: Saturday 25 September. Coverage: Live commentary on BBC Radio 5 Live. Live text coverage on BBC Sport's website and app.
Anthony Joshua will be taking on Oleksandr Usyk at Tottenham Hotspur Stadium, Saturday, with his WBA, WBO and IBF world heavyweight belts.
Joshua, 31, must win to maintain his chances of being the undisputed heavyweight champion. However, he faces a formidable challenge from Ukrainian Usyk who previously held all the belts at the cruiserweight weight.
The fight is expected to draw 67,000 people. It will be broadcast live on BBC Radio 5 Live at 22:00 BST. A text commentary page will also be available on the BBC Sport website at 20:00 BST.
We asked some big names in boxing and football to give their opinions on the big fight.
Tyson Fury is the WBC heavyweight champion. He may face Joshua next. You know he's a tough opponent.
"Usyk doesn't look like a mug. People tell me that he is too small and that he isn't good enough. But, the man is larger than Muhammad Ali, Mike Tyson, and Holyfield. He is a great fighter. He [Usyk] will win, which will be a cost to us.
Derek Chisora was the former European heavyweight champion and lost to Usyk. Although it might take six, seven, or more rounds, I guarantee that Usyk will be laid out. He will be dealt with by AJ."
Joshua says that he is not an easy fighter - Joshua looks forward to Usyk's fight
WBO champion for cruiserweight Lawrence Okolie says: "I would like to believe that AJ wins in eight to ten rounds." Usyk is able to defend himself, but he will win the fight.
Dillian Whyte is a heavyweight who lost to Joshua in 2015. He said that it was a great fight and Joshua would stop him in six to seven rounds. Usyk will be quick and Joshua should be cautious as Usyk is slightly lighter.
Joshua can be a little unsure at times, but he will get back to his old self, press on, and become the bigger, more powerful guy. He'll get the job done quickly. Joshua can set the pace and get an early knockout. If he is confident, strong and walks Joshua down, I don't see Usyk pulling any punches.
George Groves, former super-middleweight champion of the world: "If Joshua was me, I would take over the ring and try dominating and bullying off the front foot. Usyk will prefer to be on the back foot the first few rounds and then attempt to harass Joshua.
"If I were in Joshua camp, I would tell him: 'You want this guy to stay in his box. Hit Usyk hard and early. You don't want Usyk to have any confidence. You want to score something big on Usyk in the first three rounds.
Oleksandr Usyk won all 18 of his professional fights. This includes victories over Derek Chisora and Tony Bellew from the United Kingdom.
Eddie Hearn, Joshua's promoter: "I really fancy an early one. It'd be nice. I don't want my fingers to be bitten while I sit there and score it with my old friend for four to five rounds. Let's have a nice one. Charles Martin style: Little shot. Now, relax, right hand to the southpaw as he goes down the pipe."
Frank Warren, Tyson Fury's copromoter: "Joshua seems a bit slimmer. He's going to speed. He needs to be mobile against Usyk. He should win this fight. He should be too tall and strong to fight a guy who is really a cruiserweight.
He's a heavyweight fighter, but he is in his early thirties so he could still be a cruiserweight fighter if he wanted. It will be interesting to see how he gets rid of him.
"If Usyk remains there after six rounds, I believe he will cause AJ a problem. If he is still there at the end, then I see him winning it on points. He would have to outbox him in order to be there. I believe AJ is now gun shy."
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Campbell Hatton, lightweight boxer: "It is another top fight I am undercard of. Usyk is a top-ranked fighter who will cause nightmares very early on. I think AJ's abilities are underrated.
He's more than a great puncher. His technique is also impeccable. He might need to fight Usyk for a while because he is so technically proficient, but once he does it will be a quick win.
"He's going for speed, and that'll be his choice. Usyk, on the other hand, seems to be trying to put size on. That's the wrong approach. Once AJ begins landing, the difference in size will be too great for him to keep it down.
Micah Richards, former England defender: "Usyk is better than people give it credit for, but Joshua won't lose this one. Joshua-Fury is the one we want to see, so let's get past Usyk. We can settle for a great bout.
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