Undefeated heavyweight contender Anthony Joshua has 15 nocautes na súa 15 loitas profesionais. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in este sábado to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, vivir na canle Showtime en 5 p.m. E/2 p.m. PT from The O2 in London.