David Haye has insisted that Derek Chisora is in the best shape of his career ahead of his fight against Oleksandr Usyk.
This is only Usyk's second-ever heavyweight fight after he faced Chazz Witherspoon last year. But this is a much sterner test for the Ukrainian, with him facing a seasoned and dangerous heavyweight in Britain's 'War' Chisora.
This is a really fascinating fight between two completely different boxers. This is a real test for Usyk as fight fans will see on Saturday whether he can cut it at the peak of the heavyweight division.
He is a well-respected fighter after all he has achieved in the sport, and Haye is well aware that this is a massive test for Chisora.
But he told talkSPORT that his former opponent is as prepared as he possibly could be for the bout on Saturday:
"He's had a year to work on this specific fight to fight arguably one of the best pound-for-pound fighters on the planet in any weight division.
"Any expert would have Usyk in their top five, pound-for-pound of all boxers and Derek needs to be having a perfect training camp. Anything less, he hasn't got a shot.
"Any other training camp he has had coming into this fight would not have been enough; he would not have been fit enough, he wouldn't have been fast enough, he wouldn't have had the right mindset - physically or mentally, no doubt.
"So I'm so happy that he has given himself to the team, to the training programme, fully. He hasn't held anything back.
"In the past, he kind of held back 15 or 20 per cent of his energy and he always conserved a little bit for 'tomorrow'. But now I know he has given everything to us.
"So we are going to go into the ring on Saturday night with him fully charged, fully fired up and motivated.
"He is going to be as good as Derek Chisora can possibly be and he is going to need to be because he has an excellent opponent in front of him."
Usyk vs Chisora has the potential to be a fight of the year contender. The mix of styles makes this a really interesting fight.
The Ukrainian is rightly the favourite for this one given his pedigree, but he is yet to be proven at heavyweight. If he is not up to it at in the new division, Chisora will be primed to make the most of it.
Usyk is a true elite level boxer and has achieved just about everything there is to achieve in the sport. But there are questions surrounding his abilities at heavyweight and fair play to Chisora, because he looks in fantastic shape.
'Del Boy' will have to put in the performance of his career to beat Usyk, and he has done everything possible in the build-up to give him the chance to do it.