MOSCOW (QHA) - World heavyweight champion a Ukrainian Vladimir Klitschko retained his WBA, IBF, WBO and IBO titles with a unanimous points win over Russia's Alexander Povetkin on Saturday in Moscow, reports AFP. The Ukrainian champion enjoyed an emphatic victory in his 24th world title fight having put Povetkin on the canvas five times. "Of course, he was the better fighter, he's the best in the world, that's clear", claimed Povetkin. To be noted, this was Klitschko's 61st victory in his 64th professional bout, in front of a 14,000-strong crowd, having earned his first world title back in 2006. The clash at Moscow's Olimpiyski Arena was a battle of the former Olympic super-heavyweight champions. As reported, Povetkin won the Olympic gold at the 2004 Athens Games, eight years after Klitschko's victory at the 1996 Atlanta Games. Povetkin suffered his first defeat, having come into the fight with an undefeated record with 18 knock-outs in 26 wins. Klitschko has 51 knock-outs in 61 wins with the last of his three defeats having come nearly a decade ago. Both fighters walked away with a small fortune, with Klitschko making a career-high €13.13 million ($19.2 million) and Povetkin €4.4 million ($6.4 million).