The film’s title comes from the infamous so-called “Saipan Incident” in 2002, when Keane was captaining the Irish national side ahead of the FIFA World Cup finals in Japan. While preparing on the tiny island of Saipan, the soccer star — known for his hot-headed temperament on and off the field — had a very public, very bitter disagreement with McCarthy, reportedly furious at the training conditions, strategy, travel arrangements, diet and also McCarthy’s competence.