Usually, there is a safety in the middle of the field and usually there is a WR somewhere in the middle with him. Daball is having the WRs run to one side of the field at 3 different levels and drawing the safeties in that direction. There is usually a screen or a quick dump off available for the QB, but in many of these big runs, Allen is the safety valve. All of the defenders are chasing someone downfield. Defenses have tried putting a spy on Allen usually a LB and that guy is just to slow. The only thing that seemed to work was blitzes that kept Allen contained in the pocket but they still had to get there quick. Yea, wide open field for Allen to run to. That is no mistake.