By Edward Chaykovsky

Very few fighters, even in the UK, are backing IBF welterweight champion Kell Brook (36-0, 25KOs) to get a shocking upset over IBF/IBO/WBA/WBC middleweight champion Gennady 'GGG' Golovkin (35-0, 32KOs).

Brook will move up by two divisions and thirteen pounds, to challenge Golovkin at the full division limit of 160-pounds.

Golovkin will defend three of his four titles in the danger zone, as a packed house mostly with Brook's fans will be present at the O2 Arena in London.

During his time as pro, the handlers behind former middleweight world champion Darren Barker rejected the possibility of a fight with Golovkin. Barker himself, now retired, admits everything appears to be in favor of Brook, but he's going to back the local man to pull off what many will consider to be one of the biggest upsets in the last few years.

"Everything favours Golovkin going into this fight; the odds, the weight, the past contests, former opponents and manner of which GGG has destroyed everyone. I have to say Golovkin, but something in me, I don't know whether it is patriotism or the fact that I know Kell, I'm just leaning towards putting money on Kell," Barker said to Sky Sports.

"Some might think I'm absolutely crazy, I just think we're due a big upset and with Kell's style, courage and desire to take this fight, he must see chinks in Golovkin's armour. My gut is that Brook can do it on points."