Holland winger Arjen Robben has confirmed he has a small tear in his left hamstring but is hoping intense physiotherapy will help him take part in the World Cup.
The Bayern Munich star came on as a half-time substitute in Saturday's 6-1 thrashing of Hungary and scored two goals before being forced off five minutes from time.
The initial diagnosis was gloomy but Robben is hoping he can still play a key role in South Africa.
He told Studio Voetbal: "On Sunday I had the scan and it's just a small tear in my left hamstring. It's the first time I have a injury on that spot of my leg.
"If I just let it heal then I'm back on the field in four to six weeks, but we don't have so much time.
"(Physio) Dick van Toorn is going to help me. We're going to work incredibly hard. I'm going to fight until I drop.
"The last 24 hours I have had so much support from all the people around me and that had a positive effect on me.
"After the injury I went to the locker room for a first diagnosis which was very difficult. But it was clear that it wasn't good because I had a lot of pain. "
The Dutch FA are expected to make a statement later today with an update on Robben's condition but coach Bert van Marwijk has already said he does not intend to call up a replacement.
Holland's first game is on June 14 against Denmark, while they also face Japan and Cameroon in Group E.