Data & Analytics
The numbers behind the game, what they measure and how clubs and media use them.
2 explainers, in reading order
Expected goals (xG), without the maths
Understand what an xG number means, what goes into it, how it compares with goals over a season, and where it misleads.
Football data: events, tracking and physical
Tell the main kinds of football data apart, know who supplies them, read per-90 figures and percentiles, and find free data to practise on.