David Haye believes his 'love of boxing' will give him an edge over Wladimir Klitschko when the pair square up in their eagerly-awaited summer showdown.
The former cruiserweight king is currently training in Miami for his unification clash with WBO and IBF champion Klitschko.
Haye, who has one defeat in 26 contests since turning pro in 2002, stepped up to heavyweight four fights ago and toppled Russian giant Nikolai Valuev to win the WBA crown in November 2009.
Ukrainian Klitschko has held the WBO crown for a decade and has 55 victories from 58 contests since shedding the vest and head-guard in 1996.
"He's going to be in great shape," admitted Haye on Sky Sports. "That's the one thing you can guarantee about Wladimir is he comes in in tremendous shape.
"But I believe I'm more of a boxer than he is - I started competing when I was 10, he started a lot later than I did.
"He comes from a martial arts background so his first love I don't believe is boxing, mine is. I think the difference will be shown on either June 25 or July 2."
