Air Yards vs Yards After Catch: What Fantasy Managers Should Actually Use

Use air yards to understand the kind of opportunity a receiver is getting, and yards after catch to understand how completed plays gained their yardage. Neither number is a replacement for targets, routes or your league’s scoring settings. A receiver can pile up deep opportunities without helping your lineup, while a short target can become a valuable gain.

Definitions and scoring sources checked October 18, 2026, at 12:04 PM Central. This is an evergreen teaching guide, not a current player ranking. Every player and play example is hypothetical; the calculations are Football Nation’s.

Two distances, two different questions

In nflfastR’s field definitions, air yards measure target depth relative to the line of scrimmage, whether the pass is completed or not. Yards after catch, or YAC, measure the gain from the reception location to the end of the play. These are distances along the length of the field, not the entire curved flight of the football or every sideways step a receiver takes.

On an ordinary completed pass without a lateral, completed air yards plus YAC account for the receiving gain. Intended air yards from incomplete passes cannot be added to receiving yards as though they were earned. That distinction is why a chart of intended opportunity can look very different from a box score.

Example one: three targets, three different outcomes

Hypothetical target	What the numbers mean
Caught 12 yards beyond the line, then gains 8 more	12 completed air yards, 8 YAC and 20 receiving yards.
Incomplete at a depth of 25 yards	25 intended air yards, but no reception or receiving gain.
Caught 3 yards behind the line, then gains 8	Minus 3 air yards, 8 YAC and 5 receiving yards.

The third play is the useful surprise. Eight yards gained after the catch do not make it an eight yard reception when the catch happened behind the line. The starting point matters. This is also why adding all intended air yards to all YAC produces the wrong receiving total when incompletions are present.

Across these three assigned targets, intended air yards total 34: 12 plus 25 minus 3. Average depth of target, usually shortened to aDOT, is 34 divided by three, or about 11.3 yards. Yet the actual output is two catches for 25 receiving yards. The average describes where the opportunities went, not a fantasy score.

Do not confuse aDOT with target share

Target share describes how much of the passing opportunity goes to a player. aDOT describes the depth of the targets he receives. A player with a high aDOT can still have very few targets. A lower aDOT player can dominate a team’s receiving workload.

Start with the target share primer for the denominator, then use route participation to establish whether the player is regularly available to receive a pass. Depth becomes more useful after you know how many opportunities the player can plausibly earn.

Keep the same provider and target sample when comparing aDOT. Ask how unassigned throws, missing depth values and unusual plays are treated. NFL Next Gen Stats separately labels intended and completed air yard averages for quarterbacks; do not silently substitute a quarterback’s average for an individual receiver’s target depth.

Example two: the scoring format changes the decision

Imagine Receiver A catches five passes for 50 yards, with most of the yardage coming after short catches. Receiver B catches two passes for 70 yards on deeper targets. Neither scores, rushes, fumbles or earns a bonus. For this illustration, receiving yards earn 0.1 points each. Standard awards no catch points, half PPR awards 0.5 and full PPR awards one.

Scoring format	Receiver A versus Receiver B
Standard	5.0 points versus 7.0 points
Half PPR	7.5 points versus 8.0 points
Full PPR	10.0 points versus 9.0 points

These are calculations from stipulated scoring, not a forecast that short targets will always win in PPR. They show why the question is not which receiver has the more impressive depth number. The question is which combination of catches, yards and scoring chances best serves your actual league. Read the PPR scoring guide before importing a ranking from another format.

How Football Nation would use the evidence

For a waiver decision, write down what changed. If a receiver is running more routes and drawing additional deep targets, that is a role worth investigating. If his only change is one long incomplete throw, you have a new observation, not proof of a new weekly workload.

For a trade, separate opportunity from execution. Repeated deep targets may support interest at a reasonable cost, but misses can reflect poor accuracy, difficult coverage or limited separation. Do not treat unconverted air yards like a debt the football universe must repay next Sunday.

For a player with strong YAC, examine the catch locations and plays. Designed access to space is a different explanation from one broken tackle on a single long gain. Neither should be assumed from the total alone. Our target share application guide uses the same habit: explain why a number changed before acting on it.

The strongest counterargument

A reader might reasonably prefer receiving yards because they are actual production. That is fair when describing what already happened. The reason to add air yards and YAC is not to erase the result, but to ask better questions about its construction. The extra columns earn their place only when they change your understanding of role, repeatability or price.

Common questions

Are high air yards automatically a buy signal? No. Check route access, target volume and why the throws were not completed. A possible opportunity is not a promised return.

Is YAC the same as yards after contact? No. Catch and contact are different starting events. Do not swap the labels when comparing receiving and rushing statistics.

Is expected YAC the same as observed YAC? No. nflfastR documents expected YAC as a modeled estimate. The actual gain and the model’s expectation are separate values; label the source and version before calling the difference meaningful.

Football Nation conclusion

Read the receiving line in layers: routes create access, targets show involvement, depth describes the opportunity and catches plus yardage create the result. For your next waiver or trade decision, identify which layer genuinely changed. Then check the next comparable game with the same teammates available. That is a stronger process than buying the largest air yard total or selling every short target.

Technical definitions: nflfastR field descriptions.

Additional references: nflfastR receiving summary definitions and expected YAC documentation.

Scoring reference: ESPN Scoring Formats. Examples above specify their own reception settings; custom leagues may differ.

Official comparison: NFL Next Gen Stats passing metrics. The labels are referenced, not its player leaderboard.