(CNN) -- Wladimir Klitschko dominated his world heavyweight title unification match against Britain's David Haye to clinch a unanimous points decision in their bout Saturday night in Hamburg, Germany. The giant Ukrainian retained his IBF and WBO versions of the title and claimed Haye's WBA crown after a polished display over 12 rounds in the Imtech Arena of Bundesliga side SV Hamburg. Klitschko got the verdict of the three ringside judges by large margins of 117-109, 118-108 and 116-110. It was the second defeat of 31-year-old Haye's 27-fight career, most of it at cruiserweight before stepping up a division for his last five fights.
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Wladimir Klitschko beats David Haye in the world heavyweight title unification bout
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Ukrainian giant now holds IBF, WBO and WBA versions of the title
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Klitschko's brother Vitali is the WBC champion, but they have said they will not fight
The wily, 35-year-old @placeholder, who took his record to 56-3, used his extra weight and reach advantage to good effect as his jab kept his opponent at bay.