Offside: why the moment of the pass matters more than the reception

A striker receiving the ball unmarked in front of goal is not necessarily offside. Fans often notice where the ball is received first, but understanding offside means looking back to the moment the pass was played. Learning to watch the passer and the runner at the same time is one of the hardest parts of understanding the rule.

Separate position and offence

A player is in an offside position if any part of the head, body or foot is nearer to the opponents' goal line than both the ball and the second-last opponent when in the opponents' half. The hands and arms are not counted. Being level with the second-last opponent is not an offside position. Do not assume the goalkeeper is always the last opponent.

Standing in an offside position alone is not an offence. At the moment a teammate plays the ball, you look at the position and then decide whether that player later becomes actively involved, such as playing the ball or interfering with an opponent. Even without touching the ball, clearly blocking the goalkeeper's line of sight can be important.

Reading the timing of a run

For example, imagine a striker is level with a defender before the pass and then runs forward after the ball is played. Being beyond the defenders when receiving the ball is not proof that the striker was offside when it was passed. We need to separate these two moments so we do not mistake a well-timed run for an offside offence.

There is no offside offence for a ball received directly from a goal kick, throw-in or corner kick. But the next phase after another teammate plays the ball has to be considered separately. The fact that there is an exception for direct receipt does not mean there will be no offside offences throughout an attack.

When watching a slow-motion replay, do not rush to decide with just one frozen frame. If the camera angle, the moment of contact with the ball and the player's foot position are unclear, you can say you cannot see clearly yet. A better discussion focuses on what the footage establishes and what remains unclear, rather than whether the decision benefits your team.

If you are learning about offside, focusing on about three attacks during a match is more useful than trying to predict the whole game. Remember the three factors: the moment of the pass, the position and involvement. For complicated incidents such as a rebound off the post or a deflection off an opponent, you need to look further at IFAB's detailed definitions and the referee's decision.

Also imagine a goalkeeper coming forward to play the ball while a defender remains in front of goal. In that case, consider the actual positions of every opponent rather than their roles as goalkeeper or defender. If you automatically exclude the goalkeeper from the list when reading the offside line, your calculation can go wrong. Using the precise term “second-last opponent” helps avoid this mistake.

A striker moving away without playing the ball does not automatically rule out an offside offence. Check whether the striker had already affected an opponent's ability to play the ball before moving away. Only watching the player who touches the ball in the end can make you miss the rest of an attack. When rereading your match notes, you can check whether you have included the movements of players who did not touch the ball.