This was well researched, balanced, and didn't get bogged down in dates of specific rule changes too much. Nor did it grip me though, as it was a bit too dry for my taste and felt more like research than reading for pleasure.
This did not have the historian's writing style as with David Goldblatt's books on football, but it did seem that Sanders had looked up contemporary reports as well as other histories to piece together association football's beginnings. He countered the common history of public schools taking up the codified game first, and recounted the gradual changes of the best and most effective teams. Despite referencing news reports there was still a tendency to make assertions without a reference, such as teams discouraging ball work in training in order to have a hunger for the ball 'well into the twentieth century' and I think a casual style needs a bit more wit or flair if it is not going to cite all of its claims.
The section on women's football was interesting but a bit too accepting of the newspaper reports suggesting it was a laughing stock, and it didn't go into too much detail as to why it was stopped by the FA which I found a considerable oversight. Especially so, as he was prepared to describe the career of Billy Meredith quite comprehensively which seemed less relevant to the theme of the book.
I still learnt a lot and Sanders was careful to check his sources in order to flesh out a true account of events rather than the conventional wisdom. It just required me to concentrate as I would for a textbook rather than being engaged by the writing itself, which is a considerable element to a more general piece of non-fiction.