World heavyweight champion Vladimir Klitschko easily retained his WBO crown when he knocked out Alex Leapai of Australia in the fifth round on Saturday in an overwhelmingly one-sided bout.
The 38-year-old Klitschko, who holds the WBA, IBF, WBO and IBO crowns, has now been unbeaten for 10 years with his most recent defeat back in April 2004 against Lamon Brewster.
Klitschko, with his brother Vitaly the former WBC champion in his corner, knocked down his opponent after a few seconds in the first round, a big left-right combination sending the 34-year-old Leapai sprawling.
The Ukrainian, then pummeled the hapless Australian in round five, knocking him down once again before a clean knockout with less than a minute left in the round.
