Undefeated heavyweight contender Anthony Joshua has 15 uitklophoue in sy 15 professionele gevegte. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in Saterdag to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, woon op Showtime by 5 namiddag. EN/2 namiddag. PT from The O2 in London.