I bought this simply because I am a fan of Gerard Butler. However, I did know about the loss to the USA by England which is still seen as a major sporting upset.
However, on researching afterwards, there are a lot of inaccuracies but to be honest, just watch the movie. It is so rare nowadays to have a film that the whole family can watch and enjoy without violence or sex. At the time of writing this, there are only 3 players from the USA that are still alive from this game - including Gerard Butler's character. At least he was indulging in two of his passions - acting and football (being an avid fan of Celtic FC apparently).
Gavin Rossdale, the Bush frontman cuts rather a dash as Tom Finney, the England captain but considering that Tom was from the more working class part of England, it was hard to get Rossdale portraying him as a rather arrogant English toff. But I put that down to the Americans taking the usual stereotyping of the Brits in that we're all la-di-dah. Since this doesn't have spoken narrative, I can only dispel that myth by saying I'm from Aberdeen and we certainly don't speak like that. Rossdale possibly has a future as an actor, particularly in the Pierce Brosnan/Daniel Craig mould.
In all, the film is what it is, an entertaining piece of moviemaking, the girls get to look at Gerry, there's football for the others. It's something the Americans will always have in their sporting lexicons - beating the finest that England had produced.