Corner Route: Sell Inside, Then Break for the Flag
Updated · Fact checked
The corner route is the 7 in the common route tree. You stem up the field, then break toward the sideline at about 45 degrees, heading for the deep corner of the field. Older coaches call it the flag route.
It rewards receivers who can make a defender believe the route is going inside and then get outside in a hurry. It is also the high half of the Smash concept, paired with a hitch underneath.
- Route tree number
- 7
- Breaks
- Toward the sideline
- Play Designer break depth
- 10 yards (drawn default; your playbook may differ)
- In one line
- Stem to 10, 45 degrees to the corner
- Also called
- flag route
How to run the corner route
Get room to break
From outside the numbers, take a hard inside release to create room; from the slot you usually have it already.
Sell inside at the top
Push vertical, then near the top of the stem give a quick look or a hip shift to the inside, working on your insteps, without slowing down.
Break at 45 degrees
Snap out toward the sideline and the deep corner, climbing over any defender sitting in the flat.
Finish behind the cornerback
Work to the soft spot behind the cornerback and away from the safety, and look for the ball dropping over your shoulder toward the deep outside.
Where you line up changes the route
A corner needs room to break toward the sideline. Former NFL defensive back Matt Bowen points out that a receiver aligned outside the numbers has to take a hard inside release to create that room, and that the route often comes from a slot alignment. The Scouting Academy's film examples show it run by an outside receiver, a slot receiver and an in-line tight end, so it belongs in tight end practice as well as wide receiver work.
Numbering is a system choice. This site follows the common 1 to 9 tree, where odd numbers break outside and the corner is 7. In Tim Horton's tree for Human Kinetics, the corner, or flag route, is a 5. Learn the route tree your offense actually uses.
Quick corners, deep corners and the drawn 10
There is no one correct depth. The Scouting Academy describes a quick corner run after just a few steps and a deep corner that stretches ten yards or more downfield. In Smash, it says, the corner often gets the receiver 12 to 15 yards downfield. The Play Designer draws the break at 10 yards as a default, keeps 10 in its Smash and Snag concepts and drops it to 7 in Flood. Treat those as drawings and run the depth your coach calls.
Sell inside, then go to the flag
A corner is won at the top of the stem. In the Scouting Academy's breakdown of an Amari Cooper touchdown, the cornerback was in press, and Cooper used a quick stutter step and angled inside to avoid the jam. Near the top of the stem, Cooper took a quick look back at the pocket to sell an inside cut, then broke on the corner and was hit in stride.
Drew Lieberman of USA Football calls the move at the top of a 45 degree cut a vertical set: a violent hip shift on your insteps the opposite way, then a sudden change of direction with no loss of speed. That puts the corner on the full-speed side of the speed cut vs sink cut drill. Don't chop your feet or throttle down. Snap the hips and keep running.
After the break, aim for the soft spot. The Glazier Clinics breakdown of Smash has the inside receiver pressing toward the sideline and the numbers, into the space behind the cornerback and away from the safety.
Smash: a hitch below, the corner above
Smash puts two routes on the same side to make one defender choose. In Glazier's write-up of a clip from Massillon Washington coach Jarrett Troxler, the inside receiver runs the corner while the outside receiver runs a hitch or an out. The quarterback reads the cornerback: if the cornerback sinks, throw the hitch; if the cornerback attacks the flat, drop the ball in behind them and away from the safety.
Glazier calls Smash a zone-beater, specifically against Cover 2 and Cover 4, and gives a pre-snap clue: a cornerback 5 to 7 yards off and on the receiver's outside shoulder usually means Cover 2. The Play Designer's Smash adds a note for you as the corner runner: climb over the flat defender before you break.
How defensive backs take it away
The Scouting Academy says the corner route is most effective against coverage using inside leverage, where the defense is trying to push the receiver outside the numbers and away from the middle. That is why the stem matters: you want the defender worried about the inside.
Against Smash, some cornerbacks split the difference and try to sink underneath the deeper route. The Scouting Academy's answer for the quarterback then is to take the short route, and it calls trying to thread the ball between a deep-sitting cornerback and a closing safety one of the biggest mistakes a quarterback can make. Run the corner full speed on those snaps anyway; Smash only works if the cornerback has to defend both routes.
Man coverage brings its own use. Bowen notes the corner also shows up against Cover 1 in the red zone, working away from the safety help in the middle of the field. The defensive back hub covers the other side of this route.
Pass concepts that use the corner
Plays in the Play Designer's concept library with a corner in them. Open one to see the whole play and edit your own copy.
FAQ
Is a corner route the same as a flag route?
Yes. Bowen calls the flag route the old school name for the corner, and Tim Horton's route tree lists the corner, or flag route, as one route.
What coverage is the corner route good against?
Its best-known job is Smash against Cover 2. Glazier calls Smash a zone-beater for Cover 2 and Cover 4, and the Scouting Academy says the corner works best against inside-leverage coverage. Bowen also notes it against Cover 1 in the red zone.
Do you slow down at the top of a corner route?
No. USA Football's coaching treats the corner as a 45 degree cut run with no loss of speed and a violent change of direction. Sell inside, snap your hips and keep running.
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- NFL 101: Breaking Down the Basics of the Route Tree (Matt Bowen, Apr 4, 2014), Bleacher Report
- Coaching the Wide Receiver - Separation Techniques (Drew Lieberman, Jun 12, 2019), USA Football
- Running Backs - Pass Route Tips (Tim Horton, excerpt from Complete Running Back, Human Kinetics; July 1, 2016), Coaches Insider / Human Kinetics
- ITP Glossary: Corner Route (Mark Schofield, Feb 18, 2016), The Scouting Academy / Inside The Pylon
- ITP Glossary: Smash Concept (Mark Schofield, Nov 12, 2015), The Scouting Academy / Inside The Pylon
- Basic Passing Concepts: Smash Concept (Glazier Drive clip with Jarrett Troxler, Massillon Washington HS; Nov 4, 2021), Glazier Clinics
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