Just wanted to mention that I watched the bowl game between Arizona St and Rutgers, and Arizona St used the 3-vertical play at least 10 if not 15 times. Rutgers runs a lot of Cover 2 (HC Schiano came from Miami where he did the same thing) and this is maybe the best play against it. They ran it from all kinds of sets, from gun, with play action, etc. ASU racked up over 600 yards of offense and I swear at least 200 or 250 and several TDs came off this one pass play. Check out this old article I did on the play
here.