 Nyorai kuenderera mberi kwechikamu chino - Kemboi akazova African Junior Champion muna 2001 uyezve muna 2002, akapedza wechipiri paCommonwealth Gamesari shure kwaStephen Cherono. Mugore rimwe chetero Kemboi akatanga ari wechina paAfrican Championships muAthletics, asi akazopihwa bronze mushure mekunge mukundi weMoroccan Brahim Boulami agamuchira kumiswa kwe doping. 