A healthy roster is not a medical lead who keeps players healthy.
Availability reported apart from the KR, and the lead graded as a portable actor.
Same rating. Not the same amount of player.
A durable player and a fragile player with identical traits have the identical KR, because the KR is what he is when he plays. What differs is how much of it you get, reported separately. Two composite wings.
Both are 86s, with no quiet dock to the fragile player's rating. The KR and the availability sit side by side, so you decide how to weigh a great player you get sixty percent of the time. The rating tells you how good he is. The medical read tells you how often you have him.
Illustrative engine read on the real KR-plus-availability structure (availability reported separately, never baked into the KR). Composite players, demonstration figures.
Raw injury counts blame the wrong person.
A medical lead's raw availability is dominated by two things that are not him: which players he was handed, and how hard the coach worked them. Strip both, and only what survives is his fingerprint. Composite medical lead.
On paper this lead looked below average, because he was handed brittle players and a coach who ran them hard. Strip what he did not choose, and the survivor is strong. The residual is the only honest measure, and it usually disagrees with the raw count.
Illustrative engine read on the real roster-risk-adjusted and load-adjusted residual structure. Composite lead, demonstration figures.
The fingerprint moves with him, and changes a player's worth.
The medical lead is the sibling of the performance lead: one builds the body, the other keeps it on the floor. The same portability test runs, then the surviving availability feeds the realized value of every bet.
A better medical lead does not inflate a rating, he raises how much of it you can bank on. The same fragile 86 is a safer bet under a strong staff, and that difference is priced instead of hidden. He does not change the player. He changes how much of the player you get.
Illustrative engine read on the real portability and realized-value feed structure. Composite lead and programs, demonstration figures.
Availability is not talent, it is how much of the talent you get, and who keeps it on the floor is worth grading.
Rate the talent. Then rate how often you have it.
Report availability apart from the KR, and grade the person who protects it.