PPDA
PPDA counts the passes an opponent completes in a defined area and divides them by the defensive actions made in that same area, giving the number of passes tolerated per intervention.
What it means
A low value means frequent intervention and reads as aggressive pressing; a high value means the opponent is being allowed to circulate. Both depend entirely on where the zone is drawn.
Why it matters
It compresses a pressing scheme into a single decimal that is stable over a season, which makes it one of the few usable measures of defensive intent.
Where it is used
Style analysis, defensive profiling and opponent preparation, always paired with the average height of defensive actions.
Where it misleads
A deep block barely registers in a standard window, so it can post a moderate figure without pressing at all. A counter-attacking side can post a low value by compressing its engagement area, not by pressing high.
Key points
- The zone must be stated or the number is not comparable with anything.
- A low value does not imply a high defensive line.
- Counter-attacking sides distort the figure downward.
- Single-match values are contaminated by the scoreline.
- Pair it with the average height of defensive actions.
- It describes density of engagement, not intensity of effort.
PPDA describes where a team chooses to engage rather than how hard it tries, and an unstated zone makes it unreadable.