Undefeated heavyweight contender Anthony Joshua has 15 debouchur nan l ' 15 batay pwofesyonèl. Check out this video compilation from SHOWTIME Sports showcasing all of Joshua’s KOs. And tune in sa a Samdi to watch the 2012 British Olympic Gold Medalist challenge undefeated American titlist Charles Martin for the IBF Heavyweight World Championship, viv sou chotim nan 5 p.m. AK/2 p.m. PT from The O2 in London.