Career
Wassen reached his highest doubles ranking on the Association of Tennis Professionals Tour on 10 September 2007 when he became World Number. 24. The Heineken Open in Auckland, New Zealand in 2006 and 2007 teaming up with Andrei Pavel and Jeff Coetzee respectively. In 2009, he reached the finals of the 2009 Hall of Fame Tennis Championships in Newport, Rhode Island, partnering with Michael Kohlmann.