Newer fans often hear “slant”, “post” or “out” and assume the play is built around one receiver. NFL passing games are usually better understood as combinations.
Individual routes
A slant breaks quickly inside. An out breaks toward the sideline. A post attacks inside and deep. A corner route breaks outside and deep. A go route pushes vertically.
The concept is the important part
A coach combines routes so one defender cannot comfortably cover both. One route may clear space while another enters the space that was vacated.
| Concept | Basic idea | What it stresses |
|---|---|---|
| Smash | Short outside route underneath a corner route. | A Cover 2 corner/safety relationship. |
| Mesh | Two shallow crossing routes. | Man coverage and traffic underneath. |
| Flood | Three routes attack one side at different depths. | Zone defenders who must cover multiple levels. |
| Four Verticals | Four receivers push vertically. | Deep zone spacing and safety rules. |
Why motion helps
Motion can change the defensive leverage before the concept even begins. It can reveal man coverage, create a free release or force defenders to communicate just before the snap.
Best way to watch: don't ask only “who caught it?” Ask which defender the concept was trying to put in conflict.