Mezue ahịrịokwu na-esonụ: Mgbe o nwetasịrị nrite ọlaọcha n'ọsọ 50 m na nrite ọla nchara n'ọsọ 100 m na European Junior Swimming Championships 2004 na Lisbon, Portugal. Stekelenburg mere egwuregwu mba ụwa mbụ ya na 2005 World Aquatics Championship na Montreal, Quebec, Canada ebe a chụpụrụ ya na 50 m na 100 m breaststroke. N'afọ ndị sochirinụ, ọ gbagoro ọtụtụ asọmpi asọmpi Europe na-eme ihe kachasị mma ya na asọmpi asọmpi asọmpi asọmpi.
2008 European Aquatics Championships na Eindhoven na obodo ya Netherlands, na-agwụ 6th na 50 m breaststroke ikpeazụ mgbe igwu mmiri mba ndekọ na ọkara-ikpeazụ.