Olympic gold medal winner Luke Campbell has advised Anthony Joshua to constantly apply pressure in his upcoming fight with Oleksandr Usyk.
Joshua will defend the WBA, IBO, WBO, IBF heavyweight titles against Usyk at the Tottenham Hotspur Stadium on September 25.
Both Joshua and Usyk also captured gold in the Olympic games.
The British superstar is the bigger man, with Usyk likely to use his speed and footwork in order to box his way to victory.
Usyk is a former undisputed cruiserweight champion, who moved up to the heavyweight ranks in 2019.
"I think it is a great fight, Usyk is an unbelievable talent. His technique and boxing IQ is certainly up there with the best, but is he a heavyweight? I don't think he is quite a heavyweight to be honest, this is where Joshua has the advantage," Campbell told The Mirror.
"Joshua has got quick hands, and is a big strong heavyweight so if he imposes his strengths I think he will win the fight. If he sits off it could be Usyk's night, and I can't see Usyk wanting to get involved in a big strong heavyweight like Joshua. So his tactics will mostly be to make him miss, move around. Joshua has to put it on him."
Joshua's promoter, Eddie Hearn, agrees with Campbell's position. Hearn stated in a recent interview that Usyk will never be a true heavyweight boxer - at least when it comes to his physical makeup.
“I think that Usyk will never be a fully-fledged heavyweight – a real heavyweight in terms of size. What he will always have is a huge amount of skill," Hearn said.
“It takes time for people to bed into heavyweight, so put it this way, it would’ve been a lot easier fight for AJ a year-and-a-half ago. Now Usyk has fought a real heavyweight contender in Chisora, that will actually help him to start to understand what needs to be done. But AJ’s a different kind of beast. A good big guy will always beat a good small guy, so we’ll see.”