Saipan is the thrilling story of football player Roy Keane and his manager Mick McCarthy, and the events leading up to Ireland's incendiary 2002 World Cup campaign. The intense rivalry between these two personalities transcended the game, gripping an entire nation and the sporting world. On the surface, the feud was all about standards, but deep down it was a hugely emotive story of two men whose rivalry and contempt came to surpass the sport they loved. This is the definitive account of one of the most fractious fallings-out in the history of sport.