High Quality Content by WIKIPEDIA articles! Zone running actually has many different variations; an inside zone play or an outside zone play also sometimes wrongly labeled as the stretch (which is in fact a different play). THe difference between the three popular zone plays are the aiming point and reads for the ball carrier. WHile the inside zone has its first landmark around the guards original position, the outside zone aims at the off-tackle area. THe stretch usually reads the force defender outside. IT should be noted that schemes differ greatly. THe Kansas City Chiefs with Larry Johnson have been successful using this scheme. ZOne blocking originates with blocking the first level (defensive line). THere are usually two double teams on every zone blocking play (playside and weakside). FRom each double team, one of the lineman from each will work onto the next level (linebackers). DEpending on the flow of the linebackers, either the drive man (inside blocker of double team) or the post man (outside man of the double team) will leave the double team in order to reach the linebacker.