FIFA acknowledged there might be something wrong with the Jabulani World Cup ball, but won't act on any problems until after the tournament-- when it will be pointless to act. Many players have likened the Jabulani to a "supermarket ball," saying it is too unpredictable and flies through the air too easily.
Scoring was down by 16 goals in the first round compared to 2006: 117-101. However, teams played a more defensive style in the opening group stage in South Africa, so whether the ball is a major factor is difficult to measure.
At this rate, the World Cup would set a low for average goals. In 1990, when teams again played defensively – even in the latter stages of the tournament – 2.21 goals were scored per game.