At the 2002 European Championships in Athletics he became the first Finnish male in history to reach the 100 m sprint final in an international championship event. He finished fifth in the race, though years later Dwain Champers was disqualified and Pöyhönen's final position was fourth.
His 100 m personal best, also set in 2002, is 10.23 seconds; 0.02 s shy of the Finnish national record.
|1999||10.88||+1.3||Raahe||14 August 1999|
|2000||10.56||+1.8||Kouvola||5 August 2000|
|2001||10.42||+1.2||Jämsänkoski||29 July 2001|
|2002||10.23||+1.7||Joensuu||20 July 2002|
|2003||10.26||+1.2||Turku||23 July 2003|
|2005||10.38||+0.3||Krugersdorp, South Africa||15 January 2005|
|2006||10.76||+1.8||Tampere||7 June 2006|
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