Formation Scout is trained to indentify five different base offensive football formations and smaller variants of some of them. These five base formations and their variants can be found with more detail at that formation's page, although a brief rundown will be given here. The formations used are focused only on backfield players and not alignment of the line of scrimmage or wide receivers. More resources on offensive formations: Wikipedia list of offensive formations
The five base formations used in this app:
The Quarterback (QB) is the captain and play caller of the offense and it often the first to touch the ball once it has been snapped by the Center, this action is what officially starts the play. The QB can either line up crouched directly behind the center, known as "under center" or standing upright a few yards the field behind the center in what is known as "shotgun". All the formations in this project stem from one of these two positions.
The base under center formations have to do with the addition and position of other plays in the backfield
behind the quarterback. These players are often either Halfbacks (HB)
or Fullbacks (FB), determined by their size of intended use.
The two under center formations
used here are the I formation and the Singleback formation.
The I formation has a FB lined up a couple yards behind the QB and then a HB lined up behind the QB.
The Singleback formation has only a HB lined up a few yards behind the QB and is often further back.
The variants of shotgun formations have to do with the addition and position of other plays in the backfield
around the quarterback. These players are often either Halfbacks (HB)
or Fullbacks (FB), determined by their size of intended use.
The shotgun formations
used here are the Shotgun(traditional), the Pistol, and Empty.
The traditional shotgun has a HB lined up on either side of the QB in the backfield. He can be either in line
with or slight behind the quarterback, but still off to the side.
The pistol has a HB lined up a couple yards behind the quarterback. The Empty formation has no other players in
the backfield with the QB.
The first two below are both traditional shotgun formations as the depth of the RB in relation to the QB
is up to preference. What matters is that he is still close to and beside the QB, not directly behind.