Netherlands coach Bert van Marwijk doesn't know yet whether he will be without the services of tricky winger Arjen Robben when the Oranje lock horns with Denmark in their opening game of the 2010 World Cup on 14 June.
The Bayern Munich star sustained a hamstring injury in the Netherlands' 6-1 international friendly victory over Hungary on Saturday and was forced to leave the pitch in the dying minutes of the game due to the knock.
