Its a lot more complext than what this thread is suggesting.
first, there is a play with primary, secondary and tertiary targets.
second, this is different from man defense vs zone. vs a zone, the QB/R seek to find an open seam. against, man, the R needs to make a move to get open. (pick, missed assignment, clustered formation, etc.)
third, in most cases, these targets can be adjusted in route depending upon the defense played once the ball is snapped.
fourth, the timing of the routes needs to be crisp. The QB needs to have time to look at one, look off to 2, then look off to 3. Three receivers making their cut at the same time does nobody any good. Once the QB looks off one to go to two, it is too late.
Fifth, the WR (especially against man) needs to run consistent routes and make consistent cuts. The QB has to anticipate that route and cut and throw to a location. If the QB waits for the cut, it is too late.
Sixth, this all supposes the QB gets protection and that the defense didn't fool the offense with a disguise.
So the progression goes:
- Play is called.
- Pre-play motion to try and read the D: zone or man. Coach sends in the adjustment, and Allar makes the call.
- Ball snapped. Allar looks to the primary target. If open, throws. If not, moves to secondary target. Then third. Plays are designed so that one, two and three happen in succession, not at the same time.
- Allar has to assess the pass rush, blitzes and if someone missed an assignment.
- If it is a zone, Allar and the R have to anticipate where the seam will be where he can zip in a pass between defenders. Against man, Allar has to see the defender's position, know that the R is going to make his move relative to the play call and defender's position, and make his throw while the R makes his cut. The windows are usually small.
Lastly, I would be curious about how defenses played PSU. My understanding is that teams like O, UM and tOSU play a LOT of man because they have superior athletes on the corners. Our man will beat your man. With PSU, that seems like the obvious defense given the lack of size and success we've had a WR in the last five years. And that leads to what we've seen: Warren is a superior athlete in man coverage because he can beat a CB or S with his size and LBer with his agility.