 Mantzouranis akakwanisa kupinda muchikwata cheGreece mumitambo miviri yekumhanya bhasikoro pamitambo yeOlympic yeZhizha ya2008 muBeijing nekugamuchira nzvimbo yechikwata chake zvichibva pane sarudzo yenyika kubva kuUCI Track World Rankings. Achibatsirana naVasileios Reppas naPanagiotis Voukelatos munhangemutange yevarumenhangemutange, yakaitwa pazuva rokutanga remakwikwi ekuchovha bhasikoro, Mantzouranis akarekodha nguva ye45,645 uye kumhanya kwe59,152 km h kupa vatatu vechiGiriki nzvimbo yegumi yekupedzisira mumakwikwi ekutanga. Zuva rakatevera, muvarume keirin, Mantzouranis akarasikirwa nemukana wekufambira mberi kuenda kumatanho ekupedzisira, mushure mekupedza wechishanu mumatanho ekutanga, wechitatu mukudzokorora, uye gumi nemanomwe kubva pakupedzisira. 