Offside Trap

A defensive tactic where the back line steps forward together at the moment the ball is played, deliberately leaving an attacker standing beyond the last defender and therefore offside. It only works with perfect coordination — one defender reacting a fraction late and the whole trap collapses into a clean one-on-one with the goalkeeper. It's a high-risk, high-reward tool. Teams that trust their timing use it to compress the pitch and squeeze attackers into a tiny space; teams that get it wrong concede some of the most avoidable goals in the sport. Semi-automated offside technology has made referees far more confident calling marginal cases, which has actually made the trap slightly more viable again — defenders know a genuinely tight offside will get caught. Read IFAB's Law 11 for the exact offside definition the trap is built around.