Tactic
Offside trap
A defensive football tactic where the back line steps up together to leave an attacker offside.
Tactic
Overview
The offside trap is a coordinated move in which defenders advance in a straight line at the right moment, so that an attacker waiting to receive the ball is caught in an offside position when the pass is played.
Executed well, it wins possession without a tackle and pushes the defensive line high up the pitch. It requires precise timing and communication, because a mistimed step lets the attacker run through onto goal.
Key points
- The whole defensive line must step up together at the moment the pass is struck.
- Timing and communication are critical — one late defender keeps the attacker onside.
- A successful trap wins the ball back without needing a tackle.
- It relies on the assistant referee or officials judging the attacker’s position.
- High risk: if it fails, the attacker is often left one-on-one with the goalkeeper.
Where it’s used
Sports that use offside trap:
Related tactics
High press
A football tactic where a team hunts the ball high up the pitch to win it back close to the opponent’s goal.
Possession play
A patient football style that keeps the ball through short passing to control the game and tire opponents.
Counter-attack
Winning the ball and moving forward at speed to attack before the opponent can reorganise their defence.
Explore across the knowledge base
Follow the threads that connect Offside trap to the rest of SocialSportHub.
Strategies
- Attacking vs Defensive BalanceThe overarching choice a team or athlete makes about how much to commit to creating scoring chances versus avoiding conceding, and when to shift it.
- Zone vs Man MarkingTwo defensive systems compared: zonal marking guards areas of the field, while man-to-man marking assigns each defender a specific opponent to track.
Player roles
- Last line of defenceThe final barrier between an attack and a score — the goalkeeper, sweeper or last-ditch defender whose job is to stop what the rest of the team has let through.
- SweeperA covering defender who plays behind the main defensive line, free of a fixed marking job, to read danger and clean up attacks that slip past teammates.
- AnchorThe anchor is a cross-sport holding role: a steadying, defensive-minded player who shields the back line, screens danger and gives teammates a reliable base.
- Ball-winnerA ball-winner is the player tasked with regaining possession through pressing, tackling and interceptions — a team's tireless defensive workhorse.
- Target playerA target player is a focal attacker who receives, holds up and links play for others, often physically strong and good in the air or with the hands.
Rules
- OffsideA rule that prevents an attacker from gaining an advantage by being positioned too close to the opponents' goal ahead of the ball and the last defenders.
- Throw-inThe method of restarting football when the ball fully crosses a side line, taken by throwing it back into play.
- Tennis serving rulesThe rules governing how a tennis point begins, including where the server stands and where the serve must land.
- Backcourt violationA basketball rule breach for returning the ball into a team's own defensive half after it has crossed into the attacking half.
- Badminton serve rulesThe rules for how a badminton serve must be delivered and where it must land.
Positions
- Centre-backA centre-back is a central defender in football whose main job is to stop opposing attackers and clear the ball from dangerous areas.
- Defensive midfielderA defensive midfielder sits in front of the defence, breaking up opposition attacks and shielding the back line.
- GoalkeeperThe goalkeeper is the last line of defence in football and the only player allowed to handle the ball inside their own penalty area.
- PivotThe pivot is a handball attacker who plays close to the opposition defence, setting screens and looking for chances near the goal area.
- Full-backA full-back is a defender who plays on the left or right side of the defence, defending the flank while also supporting attacks down the wing.
Scoring systems
- Basketball scoringBasketball is scored by shooting the ball through the hoop, with baskets worth one, two or three points depending on where the shot is taken.
- Football (soccer) scoringFootball is scored by goals, with each goal worth one point and the team scoring the most goals winning the match.
- Volleyball scoringVolleyball uses rally scoring, in which a point is won on every rally, and matches are decided over a best-of-five sets.
- Padel scoringPadel borrows tennis scoring, counting points as 15–30–40 within games and playing sets to six games decided by a tiebreak.
- Tennis scoringTennis is scored in points, games and sets, using the distinctive 15–30–40 point sequence and a win-by-two margin at every level.