The law governing its modern application has 45 clauses and runs to more than 1,000 words. A former Premier League referee explains all

The Sporting News breaks down the offside rule, how it is enforced and why it's a part of the game.

The flag is up! We explain what that means and why one of soccer's most important rules is also one of the toughest to see live.

FIFA is evaluating a potential offside rule change inspired by Arsène Wenger, as Gianni Infantino outlines broader refereeing reforms ahead of 2026.

Developed by Fifa in collaboration with Adidas, the connected ball technology was introduced to aid referees and facilitate semi-automated offside decisions.

The biggest single culprit in Iran’s failure to advance to the knockout phase is a weird idiosyncracy to the offside law that has long outlived its usefulness.