Nyorai kuenderera mberi kweiyi ndima - Jansen akaita budiriro yake yepasi rose, paakapihwa menduru yesirivheri pa2001 European Athletics U23 Championships
. Makore mana gare gare, akauya ari wechishanu paEuropean Indoor Championship. Akakwikwidza kumaOlympics ezhizha ra2004 uye akabviswa mumakwikwi.