The Bills have been using some form of the “pistol” formation every now and then since Chan Gailey took over the offense, and with the drafting of CJ Spiller while Freddie J was already in place.
Chris at Smart Football has a great piece up detailing some of the X’s and O’s behind this offense, the advantages, disadvantages, etc.
The advantages of the two-back pistol are two-fold: (1) with the fullback to one side you can declare a strength, and also motion him back and forth (and from H-back to fullback and so on), to put pressure on the defense and to force them to adjust and (2) it opens up the traditional two-back I-form play-action game.
The piece is geared towards the college game, but can be applicable to the pros as well.
Read that and more at Smart Football.com, while we here at Blog-a-Bills keep churning away at our draft analysis piece, which we know is well behind in terms of our “one post per week” goal here at Blog-a-Bills….