The Philadelphia Eagles’ “Waggle” Pass

Chip Kelly is considered the NFL’s current innovative “genius.” But it is no secret that the bulk of Kelly’s offense is based upon basic, fundamentally sound, and proven schematics. When combined with spread principles and the up tempo pace of Kelly’s offense (and his practices), those proven schematics are the basis for Kelly’s attack.

Along those lines, one of Kelly’s favorite pass concepts is a football classic: the waggle pass. This play – and the space it creates for quarterback and receivers alike – is one reason why Kelly has been able to plug in multiple quarterbacks to his system with great success (Mark Sanchez taking over for Nick Foles being just the latest example), which is one reason why he tops my list of coaches who could make a cheap, interchangeable quarterback system work (see here). Though it is unclear if Kelly derived the concept directly from the waggle (or one of the many related plays and variations of play action and bootleg concepts), the plays are identical in many ways, most importantly in their ability to put multiple defenders in conflict.

The roots of the waggle pass are in the Delaware Wing T, developed by Dave Nelson in the 1950s. Since that time, the Wing T has been among the most influential offenses in American football, and is still one of the most common and successful offenses in the sport. At the heart of that offense is the waggle pass.

The classic Wing T waggle features buck sweep action to the right. The potency of the buck sweep demands respect. After the quarterback and the running back sell the fake, the quarterback boots to his left. There, the playside receiver usually runs a vertical route, while multiple backside receivers run crossing routes. The quarterback has a run pass option. The linebackers and safeties in particular are stressed by the play: they must respect the buck sweep action (which demands quick pursuit), while receivers cross their face to the opposite side of the field. The crossing patterns are difficult against either man or zone: against man, the receivers cross face and run away from defenders whose momentum may have started in the wrong direction; against zone, the leveled crossing routes take advantage of whether the linebackers and safeties react strong to the run, or drop too deep.

A “traditional” Wing T waggle pass (for further reading on the traditional waggle pass, see the great bucksweep.com for “The Waggle the Best Play in Football,” here):

Now, look at this Eagles touchdown from their Thanksgiving day victory over the Dallas Cowboys:

The Eagles’ waggle schematics. Notice the similarities to the traditional waggle pass. The Eagles fake their top running play (outside zone) to the right. The offensive line washes the defensive line to the right. Sanchez keeps to the left, while he has a playside comeback route and two deep crossing routes to choose from.

All 8 defenders in the Cowboys’ front react towards the run fake. Jordan Matthews, who will catch the touchdown pass, is moving in the other direction.

The tight view gives a closer look at linebackers in conflict. Both box linebackers react towards the run, while Matthews is primed to sneak behind them.

We see the traditional waggle quarterback run/pass option as Sanchez breaks the pocket. Though Sanchez is not a notorious run threat, he had already scored one rushing touchdown on the day. Defensive back C.J. Spillman (#37) reacts up towards this action, leaving a clear path for Matthews to glide behind. Furthermore, Sanchez has clear sight lines down the field – better than a quarterback could ever get from inside the pocket (another reason why Kelly’s quarterbacks thrive).

From a different angle, we see the space Matthews has as Sanchez breaks the pocket.

Just after catching the ball, we see that Matthews still has space, and a clear path to the end zone. An easy pattern with an easy quarterback read leads to the type of decision and throw that has allowed Kelly to find success with a myriad of quarterbacks.

From a different angle, we see the clear path that makes it easy to celebrate before the ball crosses the goal line.

Chip Kelly has enjoyed great success with quarterbacks on the national stage at the University of Oregon and with the Philadelphia Eagles, often with overlooked or – in the case of Mark Sanchez – discarded players. Contrary to conventional wisdom, it isn’t because he employs a rocket science system that confounds defenses. It is the packaging of simple, proven concepts – such as the waggle pass – in spread formations, executed to perfection and with great pace, that creates easy reads and open space for his quarterbacks to thrive.