Originally Posted by superpunk
Probably shouldn't have said "all". But in almost any system, there will be defensive calls where a defensive linemen will have that 2 gap responsibility. It may rarely occur, but it does occur.
Even if you would have said some
it would have been inaccurate because you are missing the point of two gapping versus one gapping.
By alignment Wade and Belicheck’s systems are a one gap system because it is impossible to play across the OL’s body with any kind of success as I pointed out earlier.
The only time they would give a two gap look is during a blitz or game or stunt. There are very few two gap teams left and imo for three reasons. It is a lot easier to teach one gap technique. The sizes of offensive linemen are enormous and you have to be totally foolhardy to think that a defensive lineman can win a head to head battle for an entire game. The only team running a counter trey offense is garbage. The only real inherit weakness to playing an attacking one gap defense is being susceptible to misdirection counters, traps, etc.
However, the benefit to a one gap system is primarily this. It dictates how the Offenses should block you and if you know how they should block you the pendulum swings in favor of the defense because now you are dictating. Last season we were dictated to which put a great strain on transitioning from playing the run to rushing the passer and moreso coverage responsibilities.