World heavyweight champion Wladimir Klitschko successfully defended his IBF, WBA and WBO titles on Saturday with a unanimous victory here over Polish challenger Mariusz Wach. The 36-year-old Klitschko was awarded the fight 120-107, 120-107, 119-109 by the three judges to earn the 59th victory of his career in his 22nd world title bout against the 32-year-old challenger.