One of the problems with the Adidas Jabulani – the ball used in the 2010 world cup – was that it had a mind of its own. It would swerve and dip and fly off at odd angles once it had been kicked – making it the bane of both goalkeepers and chaps taking free kicks etc.
Adidas – after much scientific research on the abnormal behaviour of their carefully crafted creation – came to the conclusion that the problem lay in the fact that when they had made the Jabulani they had made it perfectly spherical.
They have not repeated the mistake this time.
This time they have made the Adidas 2014 Brazuca.
A quick glance above will show you that it is clearly not perfectly spherical.
It is merely ball shaped….!
Problem solved.
More detailed explanations here .