The mystery of the vanishing spray employ by FIFA in the ongoing world cup is "suppose" to ensure and establish the fair play sermon preached by FIFA. Mostly used during set pieces such as free kicks, it serves two main purposes:
- Stops the defensive wall from encroaching closer to the ball
- Prevents the player taking the free kick from gaining the advantage of rolling the ball forward a few inches.
You had probably seen the refs spray a circle around the ball, pace out a couple of feet before spraying a line where the defensive wall will stand. The foamy spray disappears after a few minutes.
This goal line technology would have been very useful in solving the issues and technicalities surrounding Frank Lampards disallowed free kick goal against Germany in the second round of the 2010 world cup held in South Africa.
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