This is from Norm Chow in 2002 (@ NC State when he had Phillip Rivers at QB): You can see that on SOME of these - he mixes 2 or even 3 concepts within 1 pass.To better understand this post check out the BYU plays/numbers here, and compare these routes. He used these same routes at USC and NC State and still does in the NFL.1. "QUICK GAME CONCEPT" = entire 3 step drop series ("50 SERIES") except for "4 Verticals".2. "QUICK VERTICALS CONCEPT" = 3 step game with 4 verticals.NOTE: "60 SERIES" = 5 step drop (SOME but very little 7).3. "HORIZONTAL STRETCH...