Editor's note: As the summer transfer window gets set to swing open, Gab Marcotti examined the biggest moves of the past five years and gave each a grade, factoring in fees paid, players' ages and performance as well as their contract situations. The results might surprise you.
It's transfer time again. And that got me thinking about whether there are any patterns or greater truths out there, particularly when it comes to throwing around huge amounts of money.
So I divided players into six different categories: keepers, full-backs, central defenders, midfielders, attacking midfielders and forwards.