Martijn is a former tennis professional from 1991-2000 with personal success of being Dutch Singles Champion in 1999 and having played many top players on the ATP tour like Marcelo Rios, Nicolas Kiefer, Fabrice S antoro. Coach of Martin Verkerk from 2001-2002, later finalist at Roland Garros. Martijn is the founder and owner of INTIME Tennis Academy in 2002 until 2019, having coached and trained 25 Dutch junior champions, 2 European champions and 1 Junior Davis cup winner.