By Edward Chaykovsky

Tony Bellew (28-2-1, 18 KOs) could become the newest player in the heavyweight division - if he defeats former two division world champion David Haye on March 4th at the O2 Arena in London, according to his promoter Eddie Hearn of Matchroom Sport.

Bellew, who holds the WBC cruiserweight title, is taking a big risk by heading up to the heavyweight ranks - where a muscular Haye is waiting with one punch knockout power.

Haye (28-2, 26 KOs) is a former unified cruiserweight champion and also captured the WBA heavyweight title.

Unlike Bellew, Haye started his career as a cruiserweight and eventually moved up the heavyweight division.

Bellew started off as a light heavyweight, where he suffered his only two career defeats. He lost a close decision to rival Nathan Cleverly and then he was knocked out by current light heavyweight champion Adonis Stevenson in 2013.

In early 2014, Bellew returned as a cruiserweight and there was some doubt on whether or not he will actually be effective at the weight. The gap between light heavyweight and cruiserweight is 25-pounds - easily the biggest weight climb in boxing.

Bellew reinvented himself at the weight, winning his last eight fights, six of them by knockout, and capturing his first world title with a knockout of favored Ilunga Makabu last March.

Should Bellew pull off the upset in March, he would be right in the mix for the heavyweight names - including IBF world champion Anthony Joshua, who Hearn also handles.

"There is potential for a David Haye fight right now [with Joshua], so if someone beats him then you have to think that person comes into the mix as well," Hearn told Sky Sports. If Tony Bellew beats David Haye, he becomes a huge name and it would be very difficult for him to return to the cruiserweight division, because of the fights available to him in the heavyweight division.

"He feels like if he beats Haye it's going to open the doors for him in the heavyweight division as well. He's in the final stages of his career. Not as in this is his last fight, but probably last five or six fights, so he's looking at the biggest fights possible to bow out on. Obviously they would be in the heavyweight division rather than the cruiserweight division."