Manchester boxer Tyson Fury face his heavyweight opponent Wladimir Klitschko in front of the press later, but he's already started the war of words online.
The self styled "Gypsy King" will meet the world heavyweight champion at a press conference in Düsseldorf on Tuesday afternoon.
Fury is active on his Twitter account, and has given Klitschko what he claims is a vision of the result:
Fury even went as far as to claim if he doesn't beat Klitschko, who is WBA, IBF, WBO, IBO and The Ring heavyweight champion, he will retire from the sport:
Fury's tweets aren't all aimed at his opponents, the boxer offering a glimpse into his diet outside of his gruelling training regime: