Swing Route

A swing route has the running back release out of the backfield in a wide arc toward the flat. The path takes him from his alignment behind the QB to a depth of 1-3 yards, breaking outside the numbers. It's the simplest route a back can run and one of the most-tagged in modern offenses.

The swing's job is mostly to be a checkdown. Against pressure, the QB has a built-in dump-off as soon as the back clears the line of scrimmage. Against a coverage that holds, the swing turns into a built-in screen — the QB throws on rhythm and the slot/wing receivers crack the alley defenders to spring it.

It's also a pre-snap read. A linebacker who widens with the back's pre-snap motion shows he's responsible for the back in coverage; that confirms man coverage and tips the rest of the defense's hand. Smart QBs use the back's release as a free coverage indicator before they ever drop back.