Pretoria - FIFA's head of refereeing says he's "very, very satisfied" with the performance of Soccer World Cup match officials.
Jose-Marcia Garcia-Aranda says some of their decisions "are not good," but he declined to discuss individual controversies like the disallowed goal which could have given the United States a late lead against Slovenia.
He says mistakes are natural for human beings, but the referees' overall level is very high.
He says FIFA believes referees do not have a duty to explain "every single situation" that happens in a match. Garcia-Aranda says they would be distracted from their job if they had to focus on explaining themselves to the media.