Perth boxer Mark de Mori says he is more than happy to be playing the bad guy when he takes on UK heavyweight star David Haye at a packed O2 Arena in London early on Sunday morning.

While both fighters have similar statistical records - Haye 26 wins from 28 fights and de Mori 30 wins from 33 fights - Haye is a former world champion, a $1.06 betting proposition and will be the clear favourite among the crowd.

Perth boxer Mark de Mori hopes his bout against David Haye in London will result in further glory. Credit:Ali Relata Photography.

But de Mori told Perth's 720 ABC radio that he wasn't concerned.

"The fact everyone has written me off and David Haye is supposed to win so easily according to local [UK] media, I just have everything to gain here," de Mori said.