Undefeated heavyweight contender Anthony Joshua has 15 knockout sa iyang 15 propesyonal nga away. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in karong Sabado to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, nagpuyo sa Showtime sa 5 sa gabii. UG/2 sa gabii. PT from The O2 in London.