Dee ihe na-aga n'ihu maka paragraf a - N'afọ 2000, ọ gbara asọmpi na 2000 FINA Short Course World Championships na Athens ebe ebe nke iri na otu n'ime 50 m butterfly bụ nsonaazụ kacha mma ya. Na 2000 European Aquatics Championship
na Helsinki ọ nọ na ngwụcha nke ihe omume atọ niile mana ọ nwetaghị ihe nrite. N'otu n'otu, ebe nke asaa na 100 m butterfly bụ arụmọrụ ya kacha mma. A họpụtakwara Groot isonye n'egwuregwu Olimpik nke afọ 2000 na Sydney. Ọ na-egwu mmiri na okpomọkụ nke 4 × 100 m freestyle mana Inge de Bruijn dochiri ya maka njedebe, mana ọ ka natara ọla ọcha maka mbọ ya na okpomọkụ. N'otu n'otu, ọ ruru ọkara-ikpeazụ nke 100 m butterfly na-ejedebe na 11th. Na abụọ ndị ọzọ relays e nweghị ihe ịga nke ọma.