Mezue ahịrịokwu na-esonụ: Hyvönen bidoro na Kärpät junior team, wee malite igwu egwu na SM-liiga na TPS. Ndị San Jose Sharks họpụtara ya dịka onye nke itoolu ha họpụtara n'asọmpi
1999 NHL Entry Draft. Mgbe ọ na-egwuri egwu na ọtụtụ ndị otu SM-liiga, Hyvönen hapụrụ North America maka oge 2001-02, nke ọ nọrọ na Sharks 'AHL mmekọ, ndị bụbu Cleveland Barons. Ndị Florida Panthers bịanyere aka na ya ọzọ, mana Columbus Blue Jackets bịanyere aka na ya site na ndepụta ndị na-agbaghara tupu mmalite oge. Na ngwụcha oge 2002-03 NHL, ndị Blue Jackets gbazinyere Hyvönen na Färjestads BK na Swedish Elitserien. Ọ malitere oge mkpọchi NHL nke 2004/05 na Färjestad, ma mesịa gaa Ilves na SM-liiga. N'afọ 2005, Hyvönen bịanyere aka na HC Fribourg-Gottéron na NLA, mana ọ bụ ezie na ọ duru ndị otu ahụ n'ịgba akara site na mbido ọnwa Nọvemba, e lere arụmọrụ ya anya dị ka ihe na-adịghị mma ma ree ya Jokerit.