Here's CJ's very first pass in a regular season NFL game.
Here, it's a simple play but actually takes quite a bit from the QB to execute. Now, I can't be sure that Shanny put all this on his play and may have just said, "throw it instead of handing it off", we don't know. But, for the sake of hope I'm going to assume he didn't and gave him the responsibility.
On this play we're going to have an RPO(run-pass option). A play where it's designed as both a run and pass play and it's up to the QB to choose which option based off the defense. We did this quite a bit with CK when he was here. It takes a QB with both a strong arm and quick release to really hit these plays to full effectiveness.
What he's got to do is read if it's zone or man coverage. If it's zone, he'll look to throw it as zone defenders are more easily manipulated by run action as man defenders' first responsibility is coverage.
We put Garcon in the slot for an unbalanced set. With the safety coming over Garcon and the single high safety, pared with Kittle's back and forth motion reveal zone coverage. What this tells CJ is that the 2 outside defenders will maintain outside leverage and so there should be a space between the WILL backer and the outside defenders to hit Celek.
The reason I think this is an RPO instead of a pass play is how Kilgore fires out. On PA passes lineman will be careful to not get too far downfield as if a lineman gets past 1.5 yards downfield it's a penalty.
With the LB's moved because of the run action it's opened up a spot for Celek and CJ turns quickly and fires a bullet in to Celek.
He's able to hit Celek for a nice 13 yard gain.