Passing, rushing, and field effects
Receiving separation and YAC
How targets, receptions, yards after catch, and provider week separation or cushion describe receiving outcomes.
Precise definition
Receiving separation and YAC describe targets, receptions, catch-point spacing, and yards after catch as related but separable phases of receiving outcomes. Aggregate separation or cushion and expected-YAC models do not isolate route, throw, blocking, or coverage quality.
Why it matters
Those numbers show volume and post-catch yards plus week-level spacing signals; they do not grade route running or coverage quality.
How it works
Targets and receptions count opportunity and catches
Game-level targets and receptions describe volume. They do not grade how the separation was created or whether the throw was accurate.
Separation or cushion summarizes spacing at the catch point
Provider week separation or cushion figures are tracking-derived spacing signals at stated scopes. They are not route or coverage grades.
YAC and expected YAC separate post-catch movement
Yards after catch are game-level when recorded on completions; expected YAC and YAC over expected are model-derived comparisons explained in NFL Next Gen Stats materials. Post-catch yards are a different phase from catch-point spacing.
Observable signals
Targets and receptions in the game
What it can mean: A receiver was part of the passing volume and catch total in that contest.
Caution: Volume does not grade route running or coverage quality.
Week separation or cushion figures at the provider's stated scope
What it can mean: Across the week sample, catch-point spacing tended toward a certain distance.
Caution: Aggregates do not isolate route, throw, blocking, or coverage quality.
Yards after catch on completed receptions
What it can mean: Post-catch movement added yards after the ball was secured.
Caution: YAC alone does not separate runner skill from blocking, tackle failure, or throw placement; expected YAC is model-derived.
Illustrative example
Illustrative catch-point spacing then post-catch movement
Illustrative teaching sequence, not a real game. Neutral offense completes one pass to a perimeter receiver.
Step 1
Catch-point spacing
Observation: The reception is recorded with noticeable space between receiver and nearest defender at the catch.
Interpretation: That spacing is the separation phase—an observable distance, not a route-quality grade.
Step 2
Post-catch movement
Observation: After the catch, the receiver adds yards after catch before being tackled.
Interpretation: YAC is a second phase; it can be large or small independently of the catch-point cushion.
Step 3
Expectation context
Observation: A provider expected-YAC reading may sit beside the actual YAC as model context for similar throws.
Interpretation: YACOE-style comparisons are model-derived and week-or-sample scoped; they do not assign blocking or coverage credit alone.
Takeaway: Separate catch-point spacing from post-catch yards; keep aggregates from becoming route or coverage grades.
Limitation: This invented completion cannot isolate route, throw, blocking, or coverage quality, and week separation tables remain week-scoped.
Common misinterpretations
Mistake: Grading route or coverage quality from average separation alone.
Better reading: Keep separation as a scoped spacing signal; do not promote it into a route or coverage grade.
Mistake: Treating YAC and catch-point separation as one interchangeable skill.
Better reading: Separation describes spacing at the catch; YAC describes what happened after the catch—read them as separate phases.
Metrics and limitations
- Targets and receptions
Measures: Game-level target and reception counts.
Useful for: Anchoring receiving volume in the contest.
What it misses: Counts omit spacing, YAC quality, and contested-catch context.
- Average separation or cushion
Measures: Tracking-derived spacing at catch or target under provider definitions—often week aggregates.
Useful for: Summarizing catch-point spacing at the stated scope.
What it misses: Aggregates do not isolate route, throw, blocking, or coverage quality.
- YAC and expected YAC / YACOE
Measures: Game-level yards after catch on completions, plus model-derived expected YAC and over-expected comparisons when sourced.
Useful for: Separating post-catch yards from the catch itself and comparing them to a model baseline.
What it misses: Expected YAC depends on tracking/model inputs, formula versions, and qualifying samples; it does not assign full credit to the runner.