re: new defense

There are 2 base D, the 4-3 and 3-4. This really depicts the number of players on the DL. The other sets such as nickel or dime and other formations are called called off of the base. You need some kind of base D to relate to make the calls very fast. In fact in a 4-3 you could make a call to use 3 DL, 2 LB and 6 DB depending on the down and situation.