Undefeated heavyweight contender Anthony Joshua has 15 knockouts in wakhe 15 kuvelaphi ukulwa professional. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in lokhu ngoMgqibelo to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, bephila Showtime at 5 p.m. KANYE/2 p.m. PT from The O2 in London.