Tunisia goalkeeper Aymen Dahmen produced a stunning stop to deny Japan a second goal in their 2026 FIFA World Cup encounter at Estadio Monterrey — and goal-line technology confirmed the ball had not crossed the line by the finest of margins.

The save, described as unbelievable by commentators, came as Japan looked to double their lead in what proved to be one of the most dramatic moments of the match. Dahmen's reflexes and positioning kept the ball out, with the technology providing definitive proof that it had not fully crossed the line.

Goal-line technology has become an essential tool in modern football, eliminating doubt in exactly these high-stakes situations. In this case, it confirmed that Tunisia's goalkeeper had done enough — just barely — to keep his side's hopes alive.

The incident highlighted the fine margins that can define a World Cup match, with fractions of centimetres separating Japan from what would have been a commanding advantage.