Mezue ahịrịokwu na-esonụ: Otú ọ dị, Bada jisiri ike meziwanye oge a n'oge oge n'èzí, na 45.37 sekọnd, na agaghị agba ọsọ n'okpuru 45 ọzọ. N'asọmpi ndị mmadụ n'otu n'otu, a chụpụrụ ya tupu njedebe nke 1997 World Championships, 1999 World Indoor Championships, 1999 World Championships, 2000 Olympic Games, 2001 World Indoor Championships na 2001 World Championships. Otu ihe dị mkpa n'afọ ndị a bụ
4 x 400 m relay na 2000 Olympics, ebe ndị otu Naịjirịa meriri ọlaọcha, emesịa kwalite ọla edo mgbe nkwụsị nke USA. Naịjirịa setịpụkwara oge ndekọ mba nke 2:58.68 nkeji.