Undefeated heavyweight contender Anthony Joshua has 15 nocautes em sua 15 lutas profissionais. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in neste sábado to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, viver no canal Showtime em 5 p.m. E/2 p.m. PT from The O2 in London.