Mezue ahịrịokwu na-esonụ: Ser-Od bidoro isonye n'asọmpi ogologo oge n'afọ 2002. O mere asọmpị mba ụwa mbụ ya na
2002 IAAF World Half Marathon Championships ma bulie ebe dị anya na marathon na 2003 World Championships na Athletics, ebe ọ bịara 63rd na oge kachasị mma nke 2:26:39 awa. Ọ bụ onye nke iri na abụọ na 2004 Hong Kong Marathon, onye nke atọ si Eshia rụchara n'ọhịa Afrịka. O mere asọmpị mbụ ya n'afọ ahụ na asọmpị Olimpik nke afọ 2004 n'Atens. Ọ bụ naanị otu n'ime ndị Mongoli abụọ na-asọ mpi na asọmpi egwuregwu, n'akụkụ ụmụ nwanyị marathon Luvsanlkhündegiin Otgonbayar. Ser-Od bịara nke 75 n'ozuzu ya na oge nke 2:33:24 awa, ihe dị ka nkeji iri abụọ n'azụ onye mmeri.