they qualified themselves for the world championships in 2004 and won the bronze medal. they were ready for their second olympic spell, but at the 2004 summer olympics in athens they did not get further than the 14th spot because they were a lap behind. afterwards they recovered quick by winning their second amsterdam title, their second dutch madison title as well as their first six-day win in ghent and rotterdam in early 2005. later in 2005 they won another silver medal at the world championships at the madison in los angeles behind mark cavendish and robert hayles. their most successive year to date was 2006 when they won the six-day events of rotterdam, bremen, berlin and copenhagen together. due to an injury slippens was ruled out and stam started to ride with several other riders. with peter schep he claimed the victory in the amsterdam event and they also won the silver medal at the european championships in ballerup. alongside jens mouris he won a world cup madison event in moscow, all in 2006. while at the world championships 2007 in palma de mallorca he and schep won another silver medal.