Stick — 3rd-down staple. Inside receiver / slot runs a sit at 5-6 yds (the 'stick'); outside receiver clears with a fade or go; back releases to the flat. High-low on the flat defender — same idea as curl-flat but uses a SIT instead of a curl (more deliberate settle). reads Trips Left: take the open window — work the progression below in order.

Progression:

1. 6-yd sit — primary — first read, find the void in zone and sit.
2. 4-yd flat — low element of the high-low — the throw if the curl defender drops.
3. 14-yd corner — back-pylon attack — vacates the curl/flat window for the next read.
4. 14-yd corner — back-pylon attack — vacates the curl/flat window for the next read.
5. 3-yd drag — settle in the underneath window — keep eyes on the QB.