Undefeated heavyweight contender Anthony Joshua has 15 nocauts en el seu 15 baralles professionals. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in aquest dissabte per veure el 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, en viu per SHOWTIME a 5 p.m. I/2 p.m. PT from The O2 in London.