That 0-10 rating next to a player's name is not a journalist's opinion. This guide explains how data providers calculate soccer player ratings from match events, position weights and context.

The fee you read in the headlines is only part of the deal. Guaranteed payments, release clauses, performance add-ons, sell-on percentages and agent fees combine to make the true cost of a transfer — and explain why similar players can cost very different amounts.

A loan recall clause is not an automatic right to bring a player home. It must be written into the deal, it usually only works inside a transfer window, and it often ends any option to buy.

Live scores tell you the score, but the stats panel tells you how the game is going. Possession, shots, corners and cards each answer a different question — if you know what to ignore.

A sell-on clause gives a player's former club a percentage of a future transfer fee. It is how smaller clubs profit when a player they developed moves on for far more.

A free transfer does not mean a player is free. The Bosman ruling lets out-of-contract players choose their next club, but signing bonuses, wages and agent fees still shape the deal.

Correct score betting asks you to predict the exact final score. The odds are long because the task is hard — and small details like a late goal change everything.

Half time full time betting asks you to predict who leads at half time and who wins at full time. It pays more than a simple win bet because it asks two questions, not one.

One site gives a striker a 9, another gives him a 7. Player ratings differ because each system weighs goals, chances, duels and mistakes differently — and none of them watches the game the way a fan does.

Release clauses and buyout clauses are often used as if they mean the same thing. They do not: one is a price in a contract, the other is a legal mechanism for ending it.

Deadline day deals collapse for paperwork reasons more often than for money. Medicals, registration systems, loan paperwork and time zones all have to line up before the window shuts.

Possession tells you who has the ball, xG tells you the quality of the chances, and field tilt tells you where the game is being played. Together they explain a match better than any single number.

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