No sweat for champ Klitschko

Undisputed world heavyweight champion Wladimir Klitschko retained his titles on Saturday with a fifth-round KO of Australian challenger Alex Leapai.

Klitschko defended his WBA, IBF, WBO and IBO belts in Oberhausen and was in complete control of his 25th world title fight as he knocked out Leapai two minutes and five seconds into the fifth round.

"It wasn't easy, because my head was with my countrymen in Ukraine," said the champion.