Mezue ahịrịokwu na-esonụ: Ọ kwughachiri ihe ọ rụzuru nke mmeri otu ihe omume na atọ Olympics na-esote mgbede, na-emeri ihe nrite ọlaedo Olympic na
100 m butterfly, ihe omume ikpeazụ ya. Mgbe mmeri abụọ dị nso na 100 m butterfly na 2004 na 2008 Olympics (site na 0.04 na 0.01 sekọnd, n'otu n'otu), na agbụrụ a Phelps meriri Le Clos na Yevgeny Korotyshkin, bụ ndị jikọtara ọlaọcha, site na 0.23 sekọnd.