Career
He represented Aruba at the 1996 Summer Olympics, as well as three outdoor and three indoor World Championships. He later switched allegiance to the Netherlands on 2 August 1998 but did not represent that country at any major competition. Janssen still holds Aruban records on several distances.
In addition, he is a former Dutch record holder in the 60 metres indoors and 200 metres outdoors.
His father Harry Janssen was a Dutch middle-distance runner and president of the Aruba Athletic Federation while his mother Ciska Janssen was a Dutch long jumper. Outdoor
100 metres – 10.37 (+09 m/s) (Apeldoorn 1999)
200 metres – 20.59 (Assen 1994)
400 metres – 48.31 (Groningen 1995)
Indoor
60 metres – 6.63 (The Hague 1998)
200 metres – 21.14 (Ghent 1998).