Theodoor is owner of the famous Amstelveense Boys (150897), since 27 june 2004. Known for his fabulous gift to predict the final scores in his leagues (twice toto champion in VI.139). His tactical ability is underestimated by many opponent, and hopelessly overestimated by himself. In the Tour de Spam he has made a big reputation . In 2005 he won multiple stages and finished second in the overall standings.