Curl

Vertical stem then a ROUNDED ~180° turn back toward the QB, settling in a soft spot in the zone (route tree #6). Canonical depth varies by use: traditional pro-style Curl runs 10-12 yds vertical, settling at ~9 yds; SHORT Curls (5-7 yds vertical, settling at ~5 yds) are the underneath in Curl-Flat / Flood concepts. The catalog accepts ANY depth in [4, 13] — a coach asking for a 7-yard curl is asking for the short variant, not a deviation. The break is a smooth turn-back, NOT a sharp corner — receiver decelerates, faces the QB, and finishes with a slight inside lean toward the middle. Reliable vs zone — find the window between defenders.

Demo rendered on @X (outside WR) at 9yd depth. Only the route runner and the QB are shown so the break stays the focus; the same route family scales to any depth a play calls for, and concepts that use this route may set a different depth.

Concepts that use this route: Curl-Flat