John NieuwenburgJohn Nieuwenburg is a Dutch former footballer who played as a defender.Early lifeNieuwenburg started his career with Dutch side Sparta. He debuted for the club at the age of seventeen.CareerIn 1999, Nieuwenburg signed for Dutch side Ajax. In 2000, he returned to Dutch side Sparta on loan. He suffered a knee injury while playing for the club. In 2004, he signed for Dutch side FC Dordrecht. In 2006, he signed for Dutch side Helmond Sport. In 2008, he signed for Dutch side Haarlem. In 2010, he signed for Dutch side Scheveningen.Personal lifeNieuwenburg was born in 1992 in the Netherlands. After retiring from professional football, he worked as a physiotherapist.