Mezue ahịrịokwu na-esonụ: Lee ruru eru maka ihe omume igwu mmiri abụọ na 2004 Summer Olympics na Athens, site na eclipsing FINA B-ọkọlọtọ ntinye oge nke 22.95 (50 m freestyle) na 51.84 (100 m freestyle) site na Dong-A Swimming Tournament na Seoul. N'ime
Na 100 m freestyle, Lee gbara ndị ọzọ na-egwu mmiri asaa na okpomọkụ nke atọ, gụnyere onye na-egwu mmiri n'egwuregwu Olympic Carl Probert nke Fiji. O kesara mkpụrụ nke abụọ na oghere iri anọ na ise na Ismael Ortiz nke Panama na 51.74. N'ihe omume nke abụọ ya, 50 m freestyle, Lee tinyere iri atọ na ise n'ozuzu ya n'ụtụtụ ụtụtụ. Na-egwu mmiri na okpomọkụ asaa, ọ buliri ebe nke anọ site na 0.15 nke abụọ n'azụ Serbia na Montenegro Milorad Čavić na 23.05.