Undefeated heavyweight contender Anthony Joshua has 15 knockouts fil tiegħu 15 tissielet professjonali. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in din is-Sibt to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, jgħixu fuq Showtime fil 5 p.m. U/2 p.m. PT from The O2 in London.