Not sure if many people care, but the Dutch doubles specialist has called it quits. Given that he is 35 and has slid down the rankings quite a bit (#146), I think it is a sensible decision.
Wassen won five titles in his career:
2010 Metz (with Brown)
2008 Amersfoort (with Cermak)
2007 's Hertogenbosch (with Coetzee)
2007 Auckland (with Coetzee)
2006 Auckland (with Pavel)