Why is the Ecuadorian player offside?

In the 3rd minute, Enner Valencia headed close to the net to net Qatar. But soon, VAR technology came in and determined the Ecuadorian player's goal was invalid.

"It is indeed an offside phase, because when player No. 11 Michael Estrada made an offside error when participating in a previous dispute, it led to a goal. "It was offside," said VFF deputy referee Vo. Minh Tri analyzed with MetaSports, "Because when the Qatar goalkeeper rushed out, he was counted as a player. The Ecuadorian striker Michael Estrada was now under both the goalkeeper and a player, he was just above a defender, so he was offside.

According to the law of offside is the position error of a player on the field, it is defined as "The error of a player receiving the ball to attack in the opponent's half without two opposing players in front".

The 2022 World Cup finals, the first time FIFA applies semi-automatic VAR technology with 12 cameras placed on the roof of the stadium, will monitor all activities of 22 players on the field. These cameras analyzed exactly 29 points on each player. "Thanks to semi-automatic VAR technology, the referees can catch that ball offside, if it is difficult to identify with the naked eye," added Mr. Tri.