- Defensive back
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In American football and Canadian football, defensive backs (DBs) are the players on the defensive team who take positions somewhat back from the line of scrimmage; they are distinguished from the defensive line players and linebackers, who take positions directly behind or close to the line of scrimmage.
The defensive backs, in turn, generally are classified into several different specialized positions:
- Safety
- Cornerback, which include
- nickel back, the fifth defensive back in some sets
- dime back, the sixth defensive back in some sets
- The seventh defensive back, in the exceedingly rare 'quarter' set
- known as a dollar back or a quarter back (not to be confused with the offensive player who throws the ball)
The group of defensive backs is known collectively as the secondary. They most often defend the wide receiver corps; however, at times they may also line up against a tight end or a split out running back. They are usually the smallest, quickest players on the field.
See also
Positions in American football and Canadian football Offense Defense Special teams Linemen Guard, Tackle, Center Linemen Tackle, End, Nose tackle Kicking players Placekicker, Punter, Kickoff specialist Quarterback Linebackers Snapping Long snapper, Holder Backs Halfback (Tailback), Fullback, H-back Backs Cornerback, Safety Returning Punt returner, Kick returner Receivers Wide receiver, Tight end, Slotback Nickelback, Dimeback Tackling Gunner Formations – Nomenclature Gridiron football concepts Codes American • Canadian (US–Canadian comparison) • Arena • Indoor • 9-man • 8-man • 6-man • Flag • Touch • Street/BackyardLevels of play Field End zone • Goal line • Line of scrimmage • Neutral zone • Field goal range • Out of bounds • SidelinesEquipment Positions Offense: Quarterback • Running backs (Halfback, Fullback, H-back) • Receivers (Wide receiver, Tight end, Slotback) • Linemen (Center, Guard, Tackle)
Defense: Linemen (Defensive tackle, Defensive end, Nose tackle) • Linebacker • Defensive back (Cornerback, Safety, Nickelback, Dimeback, Halfback)
Special Teams: Placekicker • Punter • Kickoff specialist • Long snapper • Holder • Punt returner • Kickoff returner • Return specialist • Gunner
Other: Utility player • Triple-threat man • Skill positionPlay types Offense: Rush • Pass • Incomplete pass • Lateral • Bootleg play • Draw play • End-around • Flea flicker • Flexbone formation • Fourth down conversion • Hail Mary pass • Halfback option play • Hook and lateral • Kneel • Motion • Hurry-up offense • Option run • Option offense • Play-action pass • Quarterback keeper • Quarterback sneak • Quick kick • Reverse • Scramble • Screen pass • Spike • Statue of Liberty • Sweep • Trick play • Wildcat formation
Defense: Tackle • Blitz • Rush • Sack • Shooting the gap • Stunt • Zone blitz
Special Teams: Kickoff • Kickoff return • Punt • Punt return • Drop kick • Fair catch • Fair catch kick • Icing the kicker • Onside kick • Squib kick • TryScoring Penalties Blocking below the waist • Block in the back • Chop block • Clipping • Delay of game • Encroachment • Equipment violations • Face mask • False start • Horse-collar tackle • Illegal contact • Illegal formation • Illegal forward kick • Illegal forward pass • Illegal hands to the face • Illegal motion • Illegal participation • Illegal shift • Illegal substitution • Illegal touching • Illegal touching of a free kick • Illegal use of hands • Ineligible receiver downfield • Intentional grounding • Holding • Leaping • Neutral Zone Infraction • Offside • Palpably unfair act • Pass interference • Personal Foul • Roughing the kicker • Roughing the passer • Roughing the snapper • Sideline infraction • Spearing • Time count • Tripping • Unsportsmanlike conductTurnovers Fumble • Interception • Muffed punt • Turnover on downsDowns First down • Three-and-out • Fourth down conversionPlay clock Statistics Passer rating • Reception • Receiving yards • Return yards • Total offense • Yards from scrimmage • All-purpose yardage • Touchdown passCelebrations Miscellaneous Snap • Dead ball • Touchback • Instant replay • Coffin corner • Glossary of American football • Glossary of Canadian football • Rules • Rules in American footballCategories:
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