Clean sheet

What it measures

The player featured in the match and their team conceded no goals. Note that it is a fact about the team, not the individual — a goalkeeper who never touches the ball and a centre-back who makes twelve clearances record the same clean sheet.

How the mainstream game treats it

Worth 4 points to goalkeepers and defenders, 1 to midfielders, nothing to forwards — and only if the player passed 60 minutes. That 60-minute gate is why a defender substituted on 58 minutes in a 0-0 gets nothing.

How to score it in your league

A per-action rule with per-position points, plus a condition of minutes_played >= 60 if you want the gate. The clean sheet itself is the raw fact; whether your league pays for it, and whether it demands a full shift, are both rules you own.

A sensible starting value

4 for keepers and defenders is the familiar baseline. Raising it makes defensive assets dominant quickly, because clean sheets cluster — the same three or four teams keep most of them.

Watch out for

Removing the 60-minute condition makes late substitutes eligible, which sounds harmless until a defender comes on in the 89th minute of a 0-0 and banks the same points as someone who defended for ninety.