The United States opened their World Cup campaign with a fine win - but not before a sequence of events that left everyone inside SoFi Stadium scratching their heads as the video assistant referee (VAR) made history.

The co-hosts were comfortably leading Paraguay 3-0 when confusion reigned in the Group D game.

Veteran defender Tim Ream, 38, conceded a free-kick and was shown a yellow card for his 'challenge' on Miguel Almiron.

After the free-kick was taken, Dutch referee Danny Makkelie was sent to the screen by the VAR and overturned his decision - something officials have not previously been allowed to do.

After rescinding Ream's caution, Makkelie instead booked former Newcastle United forward Almiron, who had clearly dived.

It is the first VAR intervention for mistaken identity at the World Cup, even if it perhaps was not used in the way most expected it to be.

Fifa has introduced of a number of rule changes for the tournament, with Pierluigi Collina, the head of referees, requesting one specifically for mistaken identity.

The rule states that if a player is booked or sent off - but the foul was actually committed by the opposition team - the decision can be changed.

Another new law is second yellow cards leading to a red card can be reviewed, but not first yellow cards. The only reason referee Makkelie was able to rescind the decision was by using the mistaken identity law.

The officials allowed the game to restart before stopping, which also confused fans as normally once the game resumes it cannot be pulled back.

Former Everton and Wales defender Ashley Williams, speaking to BBC Sport, added: "They let them take the free-kick, which was bizarre but clearly the right decision.

"It's the first time we have seen it but fair play."

Former England midfielder Danny Murphy, who was co-commentating for BBC Sport, added: "Any adaptation of the rules which means diving gets more punishment is good."

The United States, managed by former Tottenham boss Mauricio Pochettino, won the match 4-1 to get their campaign off to a winning start in front of a jubilant home crowd.

Following an own goal by Damian Bobadilla, the US led 3-0 at half-time after Folarin Balogun scored twice.

In doing so he became just the second US player to score more than once in a World Cup match.

Paraguay pulled one back through Brazilian-born Mauricio before the goal of the night from substitute Giovanni Reyna, who curled a 20-yard shot home with the outside of his right foot with the final kick of the game. (BBC)

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