Glossary

All NFL MLB NBA MLS World Cup

63 essential football terms — searchable, filterable, and tappable from anywhere.

Quarterback offense position: Throws and hands off the ball; the offense's leader and primary decision-maker.; "The quarterback called an audible at the line."
Running Back offense position: Lines up behind the QB; runs the ball, catches short passes, and pass-blocks.
Wide Receiver offense position: Lines up wide; primary deep target for catching passes.
Tight End offense position: Hybrid lineman/receiver who blocks and catches passes from near the line.
Offensive Line offense position: Five linemen (LT, LG, C, RG, RT) who block defenders and protect the QB.
Center offense position: Snaps the ball to the QB and calls line protection schemes.
Fullback offense position: Lead blocker for the running back; rare in modern offenses.
Defensive Line defense position: Defensive ends and tackles who attack the line of scrimmage.
Linebacker defense position: Second-level defender; tackles runs, blitzes, and covers tight ends and running backs.
Edge Rusher defense position: Modern catch-all for defensive end / outside linebacker whose job is sacking the QB.
Cornerback defense position: Defensive back who covers wide receivers in man or zone coverage.
Safety defense position: Deep defender. Free safety plays centerfield; strong safety supports the run.
Nickel Back defense position: Extra defensive back added in passing situations (5 DBs total = nickel package).
Kicker special teams: Specialist who attempts field goals and extra points.
Punter special teams: Kicks the ball away on 4th down to flip field position.
Long Snapper special teams: Specialist who snaps for field goals and punts.
Returner special teams: Player who fields kickoffs and punts and runs them back.
Snap play: The play's start; the ball is passed from center to QB.
Shotgun formation: Formation where the QB lines up several yards behind the center to receive the snap.
Play Action play: QB fakes a handoff, then drops back to pass — designed to draw the linebackers up.
RPO play: Run-Pass Option. The QB reads a defender post-snap and chooses between a run and a pass.
Screen Pass play: Short pass behind the line of scrimmage with blockers leading downfield.
Blitz play: Defense sends extra rushers (linebackers or DBs) at the QB to disrupt the play.
Hail Mary play: A long, last-ditch pass thrown into the end zone, usually as time expires.; "Down by 4 with 2 seconds left, he threw a Hail Mary."
Holding penalty: Grabbing or restraining a non-ball-carrier. 10 yards on offense, 5 + auto first down on defense.
Pass Interference penalty: Illegal contact with a receiver during a pass. Defensive PI is a spot foul; offensive PI is 10 yards.
False Start penalty: Pre-snap movement by an offensive player. 5-yard penalty.
Offside penalty: Defender lined up in the neutral zone at the snap. 5-yard penalty.
Roughing the Passer penalty: Late or excessive hit on the QB. 15 yards plus an automatic first down.
Delay of Game penalty: Failure to snap the ball before the play clock hits zero. 5-yard penalty.
Intentional Grounding penalty: QB throws an incomplete pass with no eligible receiver in the area to avoid a sack. 10 yards and loss of down.
Horse-Collar Tackle penalty: Tackling a runner by grabbing the back of the shoulder pads or jersey. 15-yard penalty.
Touchdown play: Six points scored by carrying or catching the ball into the opponent's end zone, or by recovering a fumble there.
Field Goal play: Three points scored by kicking the ball through the uprights.
Sack stat: Tackling the quarterback behind the line of scrimmage before he throws. Counts as negative yardage on the offense's stat sheet and a positive sack on the defender's.
Interception stat: A defender catches a forward pass intended for an offensive player, taking possession for the defense.
Fumble situation: A ball-carrier loses possession before being downed. Either team can recover; whoever does so gains possession.
Pick Six play: An interception returned for a touchdown — six points off a turnover, plus the demoralizing factor.
First Down situation: The first of four downs in a series. Gaining 10 yards in the series resets to a fresh first down.
Line of Scrimmage situation: The imaginary line where the ball is spotted at the start of a play. Players must be set on their side at the snap.
Pocket situation: The protected zone behind the offensive line where the QB drops back to pass. "Stepping up in the pocket" means moving forward into space the linemen are creating.
Touchback situation: A kick that ends in the receiving team's end zone with no return. Under the 2025 dynamic-kickoff rules, touchbacks place the ball at the 35-yard line.
Passer Rating stat: Composite QB efficiency stat (0-158.3) combining completion %, yards per attempt, TDs, and INTs.
YAC stat: Yards After Catch — yardage gained by a receiver after the reception.
Target Share stat: Percentage of a team's pass attempts directed at a given receiver. Critical fantasy indicator.
Snap Share stat: Percentage of offensive plays a player is on the field for. Predicts opportunity.
Down and Distance situation: Current down (1-4) and yards to go for a fresh set of downs. "3rd and 7" = 3rd down, 7 yards needed.
Red Zone situation: Offensive territory inside the opponent's 20-yard line — where TDs become realistic.
Two-Minute Warning situation: Automatic clock stoppage with 2:00 remaining in each half.
Fair Catch situation: Returner waves an arm to signal no return; cannot be hit. Used to avoid traffic.
PPR fantasy: Points Per Reception fantasy scoring. 1 point per catch (PPR), 0.5 (Half-PPR), or 0 (Standard).
Snake Draft fantasy: Fantasy draft format where pick order reverses each round (1-12, then 12-1, then 1-12...).
Waiver Wire fantasy: In-season free agency. Players are claimed in priority order or via FAAB bids.
FAAB fantasy: Free Agent Acquisition Budget — fantasy bidding system for waiver claims.
Handcuff fantasy: Drafting a starting RB's primary backup as injury insurance.
DVOA stat: Defense-adjusted Value Over Average. An efficiency metric that grades plays against league average, adjusted for opponent quality. Originated at Football Outsiders; now hosted at FTN Fantasy under Aaron Schatz.
Streaming fantasy: Rotating between waiver-wire QBs, TEs, or DSTs each week based on matchup, instead of drafting one and starting them all season.
Boom/Bust fantasy: A high-variance player whose weekly output swings between huge and minimal — high ceiling, low floor. Often deep-threat receivers or touchdown-dependent backs.
Goal-Line Touches stat: Carries by a running back inside the opponent's 5-yard line. The strongest leading indicator of rushing-touchdown opportunity.
Game Script fantasy: How a game's score progression dictates play-calling. Teams with leads run; teams trailing pass. Vegas spreads predict it before kickoff.
aDOT stat: Average Depth of Target. The mean distance downfield a receiver is targeted. High aDOT receivers are boom/bust; low aDOT slot receivers offer steadier PPR floor.
Workhorse fantasy: A running back who handles the vast majority of his team's carries and receives passing-down work — typically 65%+ of touches and 70%+ of snaps.
Shadow Coverage defense position: A cornerback who follows the opponent's WR1 across the formation, instead of staying on one side. Elite shadow corners can erase a receiver from the game plan.