I'm just gonna put my cards on the table right away: I think using data is a good idea if you want to win more soccer games.

I know, I know. That might be shocking to hear, from the guy who wrote the book about soccer's fledgling analytics movement, the one who has moderated the soccer panel at the Sloan Sports Analytics Conference in each of the past few years, the person who has probably written the word "expected" (as in, expected goals and expected assists) more than a thousand times for the website you're currently reading.

One of the main advantages of trying to use objective information to improve your soccer club's decision-making is that most of the American sports are much further ahead. If you want it, they provide a rare kind of vision of the future: you can study the teams

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