A rating is how good he is. Availability is how much you get.
It strips out squad fragility and training load and credits the medical lead only with the availability that survives.
He does not make a player better. He keeps him on the pitch.
Every rating answers how good. The medical lead answers a question the ratings never touch: how much of the player do you actually get across a season. A brilliant player who plays half the matches and a good one who plays them all are different bets, and the gap is availability, not quality.
Neither rating is wrong, and neither moves. What the medical lead changes is the second number, how many of the thirty-eight a player is fit for, and over a season that decides how much of the rating you actually bank. A recruitment read that stops at the rating is only half the bet. Talent is what a player can do. Availability is how often he is there to do it.
Illustrative engine read on the real availability-and-durability signal (matches-available rate, return-to-play, recurrence of soft-tissue injuries; a quality-independent read). Composite players, demonstration figures.
Most of an injury count is not the doctor.
Raw injury numbers are misleading, because two things that dominate them are not the medical lead's doing: how fragile the squad already is, and how hard the manager works it. Both are normalised out, and only the availability variance that survives both subtractions is attributed to the named medical lead.
This is the honest attribution the raw table cannot give. A medical lead at a club with an old, brittle squad and a manager who never rotates will show ugly numbers that are mostly not his fault, and one at a young squad with a careful manager will flatter a mediocre operator. No credit or blame for the roster he was handed or the load someone else chose. Judge the doctor on the injuries the squad and the schedule do not already explain.
Illustrative engine read on the real two-confounder normalisation (raw availability minus roster injury-risk profile minus training-load exposure; only the surviving residual attributed to the medical lead). Composite squad, demonstration figures.
Same number, a different amount of him, a different bet.
A strong, portability-validated medical lead raises a player's expected availability, which raises the realised value of the bet without touching his rating. A durable player and a fragile one with the same traits have the same number; the medical read is a condition on the bet, exactly the way the referee is a condition on a match, not a change to anyone's ability.
This is why the medical lead sits beside the ratings and not inside them. His fingerprint decides how much of a player's quality a club banks over a season, and whether a bet pays out as often as the rating implies, and like every portable actor it is trusted only once it reproduces at another club. The rating is the ceiling. Availability is how often you reach it.
Illustrative engine read on the real condition-on-the-bet structure (availability-adjusted expected value, portability validation) and the no-KR-mutation rule. Composite player, demonstration figures.
The rating is the ceiling; availability is how often you reach it.
Rate the ability. Then read how much you get.
The Medical Lead read isolates availability from quality, strips out the squad and the schedule, and conditions the bet on how much of a player you can actually field, never his rating.