 Okoronkwo akatamba mitambo makumi maviri neshanu kuchikwata chenyika cheNigeria mushure mekuita mutambo wake wekutanga musi wa13 Ndira 2001, vachipesana neZambia. Akatamba muna 2002 na2004African Cup of Nations kupedza wechitatu nguva dzose uye muMitambo yeOlympic muna 2000. Akatambawo muminiti imwe neimwe yeNigeria ye2002 World Cup campaign, apo vakakundikana kufambira mberi kupfuura chikamu cheboka. 