adidas defends new Jabulani ball

Manufacturers adidas claim that altitude is the main factor affecting the World Cup ball - not its design - as criticism from players grows.

BBC, 14th Jun 2010

Link: http://news.bbc.co.uk/go/rss/news/int/search/news+sport/science/-/sport2/hi/football/world_cup_2010/8739146.stm