SANTIAGO, Chile (AP) — FIFA is employing an alternative review system that allows coaches to appeal two referee’s decisions per match at the Under-20 soccer World Cup in Chile

The football video support (FVS) is a “simplified version” of VAR and has transformed the youth tournament into a testing ground for new technologies.

Cards that vary between blue and purple are held by coaches, who are in charge of requesting reviews.

During the group stage, its use has proven crucial, defining the course of several matches played in the cities of Santiago, Valparaíso, Rancagua and Talca. The system was deployed in more than a dozen matches in the early part of the tournament.

FVS was first used when South Korea coach Lee Chang-Won used a card for the first time during the opening match against

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