<p>Vladimir Klitschko knocked out Jean-Marc Mormeck of France with a stinging left-right combination in the fourth round to retain his world heavyweight titles at the Esprit Arena on Saturday.<br /><br /></p>.<p>The Ukrainian took his career tally to 50 knockouts from 60 fights interspersed with just three losses.<br /><br />Klitschko, 35, had knocked down former cruiserweight world champion Mormeck, who at 1.81 metres is 17 centimetres shorter than the Ukrainian, in the second round with a huge right that sent the Frenchman sprawling.<br /></p>
<p>Vladimir Klitschko knocked out Jean-Marc Mormeck of France with a stinging left-right combination in the fourth round to retain his world heavyweight titles at the Esprit Arena on Saturday.<br /><br /></p>.<p>The Ukrainian took his career tally to 50 knockouts from 60 fights interspersed with just three losses.<br /><br />Klitschko, 35, had knocked down former cruiserweight world champion Mormeck, who at 1.81 metres is 17 centimetres shorter than the Ukrainian, in the second round with a huge right that sent the Frenchman sprawling.<br /></p>