Revealed: The secrets of the brutal training camp that rebuilt Anthony Joshua

Anthony Joshua is a changed man. Not physically - the trademark sculpted physique will be once more present and correct when he steps back into the ring for the first time in almost a year on Saturday for his rematch against Oleksandr Usyk.

But in his mentality, Joshua insists he is a very different animal now to the one that succumbed so meekly at the Tottenham Hotspur Stadium last September. And it is no exaggeration to say that his hopes of winning back his three world title belts in Saudi Arabia depend on him being good to his word. 

There is certainly a feeling of renewal around Team Joshua. He has a new coach, for one thing, the Mexican-American Robert Garcia, who has subjected Joshua to a "brain fatiguing" training regime alongside Angel Fernandez, mentor and co-trainer for the past two years.

Garcia, 46, has been in charge of Joshua for eight months, having replaced his previous coach Robert McCracken, who had guided him since his amateur days, and is making his presence felt, certainly in terms of his fighter's approach. 

"We have to let Anthony Joshua off the leash for this fight - we have to," Garcia, a former world champion himself, told Telegraph Sport. "This fight is all about mindset. This is the hurt business. Usyk is a very smart fighter, and Anthony has shown us that he has great power, size and strength and we have been instilling his belief in his ability to go out there and hurt opponents. 

"We want him to go out there and impose himself. We know that he got the plan wrong the first time, and this time he has to be more aggressive."