Spray to keep defenders in place
Argentine soccer authorities approve use of a "disappearing" spray which will help referees mark the right place for free kicks - and prevent defenders from overstepping the mark.
Referees will pace the regulatory 9.15 metres between the ball and the nearest defender and then spray a white line on the pitch to mark the correct position of the wall.The line then disappears from the pitch within a minute. Pavithra George reports.
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