Kiwi heavyweight boxing champion Joseph Parker has earned the respect of British counterpart David Haye ahead of next weekend's WBO title defence against Hughie Fury in Manchester.
Parker, who started his pre-fight camp in July after defeating Razvan Cojanu via unanimous decision in May, has slimmed right down for the September 23 bout.
He now weighs around 110 kilograms.
Haye, with a 28-3 professional record, was impressed by Parker's physical condition, having hosted him in his London gym.
The 25-year-old Parker completed the bulk of his pre-fight camp in Las Vegas, before travelling across the pond last Friday.
He'll transfer to Manchester next week.
"Clearly he's been eating, sleeping, training and not much else," the 36-year-old former WBA heavyweight champion Haye said.
"He's a completely different human than the one here 10 weeks ago."
Despite the 22-year-old Fury's home advantage in Manchester and an unbeaten professional record of 20-0, Parker heads into the bout as a strong favourite.
A statement victory is considered crucial for the Aucklander as he looks to turn the heads of the British boxing public and land future bouts with the likes of Haye, Tony Bellew or superstar Anthony Joshua.
However, Haye warned that Fury - cousin of brash former champion Tyson Fury - would be tough, and encouraged Parker to keep patient in the ring.
Fury had a cumbersome style that was difficult to breach.
"A very underrated defence, and it could pose Joseph a few tricks early doors, until he gets to grips with things," Haye said.
"Physically he's going to have to be on point, tactically he's going to need to be on point - the Furys, the head coach knows his stuff.
"He's popped over (to the UK) from time to time and teased us, but to come over here and show us what he's got with a spectacular win, that would really put his name in lights and call for one of the big unification fights."