[9] Later that year Stam and Slippens represented the Netherlands at the 2000 Summer Olympics in Sydney where they took the 8th spot.

[10] In 2001 Stam and Slippens had their first top three ranking during a Six-day cycling event, finishing third in Amsterdam.

[12] That same year they became the European Champions at the Madison beating Bruno Risi and Kurt Betschart for the gold.

[14] Their first Six-day racing win Stam and Slippens also achieved in Amsterdam, where they again beat Risi and Betschart in 2003.

[9] Later in 2005 they won another silver medal at the World Championships at the madison in Los Angeles behind Mark Cavendish and Robert Hayles.

[18] Their most successive year to date was 2006 when they won the six-day events of Rotterdam, Bremen, Berlin and Copenhagen together.

With Peter Schep he claimed the victory in the Amsterdam event and they also won the silver medal at the European Championships in Ballerup.