He won two Open events in his native country during 2007 - the Mid-Netherlands Open and the North-West Netherlands Open, but made his mark on the scene by beating favourite and number two seed Gary Anderson in the first round of the 2008 BDO World Darts Championship. Roosenbrand was making his debut on television and at the World Championship. It was also a major upset as Anderson had been widely tipped to take the title following his victories at the 2007 International Darts League and 2007 World Darts Trophy - tournaments which had featured players from both the BDO and PDC. He lost 4-1 in the second round of the competition to Australian Simon Whitlock, who reached the final.