Netherlands are set to be without midfielder Nigel de Jong for the remainder of the 2014 World Cup due to a groin injury.
The 29-year-old AC Milan midfielder has played in all four of Holland's World Cup games, but was forced off the pitch just nine minutes into the side's second round clash against Mexico in which Netherlands scraped through with a late 2-1 victory.
De Jong had suffered a groin injury in the early stages of the match, and the Netherlands team posted on their official Twitter account that he may miss the rest of the tournament: "Nigel de Jong has a tear in his groin muscle. He's probably out for two to four weeks."
De Jong himself also wrote on Twitter: "Devastated with the news about my injury. Sadly enough this is part of the sport as well. Will work hard on my recovery now and keep hope."
Holland needed a pair of late goals to best Mexico in their last-16 match, goals in the 88th and 94th-minute enough to progress into the quarter-finals. They will now meet Costa Rica on Saturday, who had to overcome a penalty shoot-out over Greece to make it through to the last eight.
Striker Robin van Persie however hinted that despite the muscle tear that de Jong suffered, he may still appear in the World Cup, as the 75-times capped Holland midfielder was present at the training pitch.
Winger Arjen Robben added: "It's a hard blow for us that Nigel has been injured. The possible absence of De Jong in the quarter-finals is a heavy loss.
"But our strength is that every player who comes off the bench on to the pitch manages to have a big impact on the match. The confidence within our team is very big, in spite of any absence."
Robben and van Persie have both scored three goals so far in the 2014 World Cup, and are 20/1 (Robben) and 14/1 (van Persie) to be top goalscorer of the tournament with William Hill.
Costa Rica goalkeeper Keylor Navas meanwhile is a slight injury doubt for the game on Saturday against Oranje, nursing a shoulder knock. The 27-year-old stopper is expected to still participate however, after helping his side beat Greece in the decisive penalty shoot-out.
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