Offside (sport)

[1] The word "offside" comes from a military term for a man trapped behind enemy lines, where he is said to be "off the strength of his side".

Offside rules date back to codes of football developed at English public schools in the early nineteenth century.

This was similar to the current offside law in rugby, which penalizes any player between the ball and the opponent's goal.

of the late 1980s, referenced comedically in the movie The Full Monty when a group of novice male strippers struggling with choreography realise a key step replicates the Arsenal 'Back four springing the offside trap.

The captain of that Arsenal team, Tony Adams referenced both the tactic and the film when performing in the 2022 series of Strictly Come Dancing .

Clemens Schüttengruber , referee of Austria ; here as assistant referee, showing the position of an offside.
The blue forward on the left of the diagram is in an offside position as he is in front of both the second-to-last defender (marked by the dotted line) and the ball. Note that this does not necessarily mean they are committing an offside offence.