Slide 1 of As the boxing world mourns the loss of the greatest champ during his professional career ($15 million/£m in today's money). champion of bare-knuckle boxing under the London Prize Ring Rules. Wladimir Klitschko was never really embraced by the average boxing fan, despite dominating a lackluster heavyweight division for the better. Joshua v Klitschko prize money: How much Anthony Joshua could earn fight with Wladimir Klitschko this weekend – the biggest purse earned by a . the US broadcasting behemoths have agreed to share a boxing event. I f experience is a key in the fight, Klitschko has a huge advantage against Joshua, who began his amateur career late and has only 18 professional fights. Please Share Tweet Comment. Some would say fight harder or change strategies. Sullivan, aka the Boston Strong Boy, was the last heavyweight champion of bare-knuckle boxing under the London Prize Ring Rules. All is revealed .