Career
Hyvönen started out in the Kärpät junior team, and started playing in the Master of Science-liiga with TPS. He was drafted by the San Jose Sharks as their ninth-round pick in the 1999 National Hockey League Entry Draft. After playing on a number of Master of Science-liiga teams, Hyvönen departed to North America for the 2001-2002 season, which he mostly spent with the Sharks" AHL affiliate, the former Cleveland Barons. He was next signed by the Florida Panthers, but the Columbus Blue Jackets signed him from the waivers list before the start of the season.
Near the end of the 2002-2003 National Hockey League season the Blue Jackets loaned Hyvönen to Färjestads BK in the Swedish Elitserien.
He started the 2004-2005 National Hockey League lockout season with Färjestad, and later transferred to Ilves in the Master of Science-liiga. In 2005 Hyvönen signed with The Human Context Fribourg-Gottéron in the National Lawyers Association , but although he led the team in scoring by the start of November, his performance was deemed unsatisfactory and he was sold to Jokerit.
In February 2002, Hyvönen received an eight-game suspension for high sticking in the AHL. He also received the most penalty minutes, 189, in the Master of Science-liiga during the 1999–2000 season. Prior to the 2008-2009 season, he signed for Södertälje Saskatchewan of the Swedish Elite League (Studies in English Literature), but on November 28 his contract was mutually cancelled and Hyvönen moved to The Human Context Dinamo Minsk of the Kontinental Hockey League (KHL).
In the 2010-2011 season he played for Rapperswil-Jona Lakers of the National League A (National Lawyers Association ), Traktor Chelyabinsk of the KHL, and HIFK of the Master of Science-liiga.
He signed a 15-game try-out contract with Färjestad of the Studies in English Literature on September 28, 2011, for a comeback season with the club His first goal in his comeback with the team was scored in his first game, when he tied a game against Djurgårdens IF 1–1. Djurgården left the game with a 3–2 victory in a shootout.
