The position coach teaches what a player can do. The performance lead keeps him on the field to do it.
Football's defining reality is attrition, so the engine carries a position-specific injury layer that haircuts the availability side of every projection, and the performance and strength lead is the staff actor who moves it. His domain is the two things the position coach cannot teach: the physical envelope (the strength, explosiveness, speed, and agility a player realizes) and the availability that decides how much of a rating a team actually banks. He is rated as a portable actor on whether his rosters stay healthier and more available than their injury profile predicts, and, like every staff read, he moves the availability and the physical projection but never the grade itself.
A rating you cannot field is a rating you cannot bank.
A composite player, one rating, two availability profiles. Football is a sport of attrition, so the engine carries a position-specific injury layer that haircuts the availability side of every projection, and the performance lead is the actor who moves it.
The attrition layer adjusts the availability and the confidence, not the KR, and is reported explicitly. The mortality-table discipline holds: only degrees of risk, a survival probability, widest at running back. The rating says how good he is. Availability says how much of it you get.
Illustrative on the real attrition layer (the three tiers, the availability haircut, the workload and injury-history and multisport inputs, availability as a multiplier, the performance residual). Composite player, demonstration figures.
The traits the position coach cannot teach, the performance lead builds.
The performance lead develops the half of the player the position coach cannot: the athletic envelope. It is a different tier of traits, on a different clock, and it is age-conditioned.
The physical projection flows through the trait-to-KR weighting into the archetypes it gates (a lineman adding functional strength, an edge adding bend and explosion, a back adding play strength), re-pricing trajectories as a position coach's technique does, but on a different set of traits, and it never modifies current scores. The position coach and the performance lead develop different halves of the same player.
Illustrative on the real physical-development layer (the physical developability tier and its age-conditioning, the position-coach-versus-performance-lead split, the Frame Upside projection, the multisport positive, the trait-to-KR flow-through). Composite player, demonstration figures.
Move the availability and the envelope. Never touch the number.
Availability and physical development are joint outputs of several parties, so the engine splits the credit in the open and prices the lead against the roster he was handed. Then it follows the health across his stops.
A performance lead whose rosters beat their injury profiles across teams and years is a real, quantified edge and a real source of surplus, confidence-gated and separated from the medical staff and the player. It feeds the institutional term and the availability-adjusted value. Keep him on the field and build his envelope, and let the grade stay exactly what it is.
Illustrative on the real credit and governance mechanics (the transparent credit split, the never-touches-the-grade rule, the portable-actor availability-travels read, the institutional term). Composite performance lead and rosters, demonstration figures.
A grade measures how good a player is when he is on the field, and it says nothing about how often he is, so the engine carries availability as a separate layer and treats the performance lead as the actor who moves it. Football is a sport of attrition, and the injury risk is real and position-specific: the open-field runners and coverage players get hurt most, the passers and linemen sit in the middle, the specialists least, and a rating carried at a high injury risk is a different bet than the same rating carried at a low one. So the performance lead is rated on the availability his rosters realize above their injury profile, and on the physical envelope he builds, the strength and explosiveness and speed the position coach cannot teach and the peak-timing curve eventually takes back. But every bit of it moves the availability and the physical projection and the confidence, and none of it moves the grade, because a player who is kept healthy and made stronger is a better bet to realize his rating, not a higher rating. Split the credit with the medical staff and the player's own durability, follow the health across the stops, and price the man on what stays true wherever he works. The best ability a staff can add is the one that lets you use all the others.
Build the envelope, and keep him on the field. Never the grade.
Performance Intelligence rates the strength and performance lead on the availability his rosters realize above their injury profile and the physical envelope he builds, splits the credit with the medical staff and the player, and moves the availability and the projection, never the grade.