Argentinean striker Hernan Crespo has slammed the quality of refereeing at the World Cup and claimed his side have had three legitimate goals wiped out already this tournament.
The Chelsea player believes his side have been denied goals against the Ivory Coast, Serbia and Montenegro and most recently in the 2-1 win over Mexico.
Crespo said: 'We have won three matches in this World Cup and in those three matches now we have had good goals not given by the referee - for [Roberto] Ayala against Ivory Coast, for me in the second match and now for [Lionel] Messi against Mexico.
'Referees can make mistakes but at a high level you have to question whether they are the right people.'
The victory in a superb match against Mexico has set up a mouth-watering quarter-final with hosts Germany in Berlin on Friday, and Crespo believes Argentina can cope with the weight of expectation.
He said: 'If people regard us as favourites then we are very proud of that and we hope we can win the World Cup for our fans.
'It feels like we have played four finals already but this win against Mexico now allows us to dream.
'Germany will be difficult but we will try to go out there and enjoy it. It could be the decisive match of the World Cup and we will have to be on the top of our game.
'We do understand we still need to improve. We don't need to change a lot but we did allow Mexico too much of the ball, we need to work on that, because if you don't have possession you cannot dictate the game.'
Rafael Marquez opened the scoring for Mexico and Crespo has been credited with the equaliser despite television replays suggesting it went straight in off the head of Bolton's Mexican striker Jared Borgetti.
But Crespo insisted: 'I swear I touched it - whatever it looks like on television I did get a touch.'
Mexico played their full part in the match in Leipzig that went into injury time and it took a volley of outstanding quality - a goal that it is unlikely to be matched this tournament - by Atletico Madrid Maxi Rodrigues to send Argentina through.
