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Defensive Basics
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Defensive Positions 4-3 PERSONNEL N = Nose T = Tackle E = Defensive End E = Defensive End M = Mike (Middle) LB S = Sam (Strongside) LB W = Will (Weakside) LB SS = Strong Safety FS = Free Safety BC = Boundary Corner FC = Field Corner
3-4 PERSONNEL N = Nose E = Defensive End E = Defensive End B = Buck LB M = Mike (Middle) LB S = Sam (Strongside) LB W = Will (Weakside) LB SS = Strong Safety FS = Free Safety BC = Boundary Corner FC = Field Corner
NICKEL PERSONNEL Teams send either a Defensive Lineman or a Linebacker off the field and substitute in a 5th Defensive Back called the Nickel Back.
Defensive Line Techniques
T G C G T
QB WR
TE WR TE
D C B A A B C D
Gaps
T G C G T
QB
TE TE
9’ 6’ 5’ 4’ 4i 3’ 2’ 1’ S 0’ S 1’ 2’ 3’ 4i 4’ 5’ 6’ 9’
**LB techniques/alignments are the same as D-Line except you add a zero (0) to the end of the number.
i.e. 00’, 10’, 20’, 30’, and 40’
FRONTS
EVEN FRONTS ODD FRONTS EVEN (N=2’, T=2’) ODD (N=0, T=4’) OVER (N=Shade, T= 3’) EAGLE (N=0, T=4i) UNDER (N= Shade, T= 3’) STACK (N=0, T=5’) G (N=2’, T=3’)
2 HIGH SAFETIES 1 HIGH SAFETY Cover 0 (all man) Cover 1 (man-‐free) Cover 2 (2 deep, 5 under) Cover 3 SKY (3 deep, 4 under) Cover 2 READ Cover 3 CLOUD (3 deep, 4 under) Cover 4 (4 deep, 3 under) Cover 3 FIRE (3 deep, 3 under) Cover 5 (2 deep, man under) Cover 7/9 (3 deep, 5 under)
COVERAGES
4-3 Even
T G C G T QB
F
Z Y X
H E N T E
W S M CB
FS SS
CB
Defensive Fronts
4-3 Over
T G C G T QB
F
Z Y X
H E N T E
W S M CB
FS SS
CB
Defensive Fronts
4-3 Under
T G C G T QB
F
Z Y X
H E N T E
W
S
M CB
FS SS
CB
Defensive Fronts
4-4 Over
T G C G T QB
F
Z Y X
H E N T E
W S M CB
FS
SS CB
Defensive Fronts
4-4 Under
T G C G T QB
F
Z Y X
H E N T E
W S M CB
FS
SS CB
Defensive Fronts
5-3 Under
T G C G T QB
F
Z Y X
H E N T E
W S M CB
FS
CB
T
Defensive Fronts
5-2 Under
T G C G T QB
F
Z Y X
H E N T E
S
SS
M CB
FS
CB
T
Defensive Fronts
5-2 Odd
T G C G T QB
F
Z Y X
H M N T S
B
SS
M CB
FS
CB
T
Defensive Fronts
3-4 (Odd)
T G C G T QB
F
Z Y X
H E N E
M
SS
B CB
FS
CB
Defensive Fronts
S W
3-3 Stack
T G C G T QB
F
Z Y X
H E N E
M SS N CB
FS
CB
Defensive Fronts
S W
Cover 0
Iden1fying Cover 0 1) Everybody is playing man coverage. 2) No deep safe1es. 3) Safe1es align directly on the #2 receiver, instead
of on the hash marks. 4) Safe1es have a depth less than 10 yards from the
Line of Scrimmage (LOS). 5) Defensive backs look at their WR, instead of the
QB.
T G C G T QB
F
Z Y X
H
E N T E
W S M CB
FS SS
CB
Coverages
Cover 1
Iden1fying Cover 1 (One Deep Defender) 1) One safety in the middle of field (MOF) playing
deep. 2) Everyone else is playing man coverage. 3) Corners look at the WR, instead of the QB. 4) Corners are aligned inside the WR with back
turned to the QB.
T G C G T QB
F
Z Y X
H
E N T E
W S M CB
FS
SS CB
Coverages
Cover 2
Iden1fying Cover 2 (2 Deep Defenders) 1) Two deep safe1es aligned on the hash marks at a
depth of 10-‐12 yards. 2) Corners are at a 4-‐5 yard depth with outside
leverage looking in at the QB. [*This is referred to as a “Cloud” corner.]
3) Outside LBs play closer to the box instead of aligning off the #2 receiver.
T G C G T QB
F
Z Y X
H
E N T E
W S M CB
FS SS
CB
Coverages ½ ½
Flats Flats
Cover 20
T G C G T QB
F
Z Y X
H
E N T E W S M
CB
FS SS
CB
Coverages
Cover 3
Iden1fying Cover 3 (3 Deep Defenders) 1) One deep safety in the middle of field (MOF)
covering the deep middle zone. 2) Corners playing “Off” coverage responsible for
the zone from the hash marks to the sideline. CB depth is about 7-‐8 yards off the WR.
3) Outside LBs aligned on the #2 receiver and are responsible for covering the “flats.”
T G C G T QB
F
Z Y X
H
E N T E
W S M CB
FS
SS CB
Coverages ⅓ ⅓
⅓
Flats Flats
Cover 4
Iden1fying Cover 4 (Four Deep Defenders) 1) Safe1es are aligned on the hash marks at a 10-‐12
yard depth playing deep middle quarters. 2) Corners are “Off” at a 7-‐8 yard depth playing
deep outside quarters. 3) Outside LBs align on the #2 receiver and are
responsible for covering the “flats.”
T G C G T QB
F
Z Y X
H
E N T E
W S M CB
FS SS
CB
Coverages ¼ ¼ ¼ ¼
Flats Flats
Cover 6
T G C G T QB
F
Z Y X
H
E N T E
W S M CB
FS SS
CB
Coverages ¼ ¼ ½
