UNDERGROUND bare-knuckle boxers are hoping their bloody sport will soon become a mainstream, multi-billion dollar industry. Prizefighters from across America meet in garages, alleyways and other rough venues to duke it out - but they are hopeful that the bloody bouts will soon have mainstream acceptance. Reputed former mobster Danny Provenzano, 51, is confident that the sport – which he says is for boxing purists – will soon be as big as the Ultimate Fighting Championship. Despite their humble surroundings it is believed prizefighters often make up to $100,000 for a single fight. Barcroft Media was granted access to a bout organised in September 2015 at an undisclosed location on the east coast of America.