The Premier League welcomed the Video Assistant Referee system on its opening weekend, with the new technology providing several talking points.
Manchester City were 2-0 up against West Ham at the London Stadium and thought they had a third in the second half, only for Mike Dean to rule Gabriel Jesus' goal out for an offside infringement by Raheem Sterling.
Later in the game West Ham were on the receiving end of VAR however when Sergio Aguero was ordered to retake his missed penalty after encroachment from West Ham's Declan Rice - the Argentinian scored at the second time of asking.
Much of the backlash against VAR in this game appeared to be prompted by the fact Sterling was offside by a matter of millimetres, leading some to question whether the laws of the game needed to be changed.
Three goals were ruled out in total by VAR and over 70 checks were made on decisions over the weekend. It will no doubt take some time to adapt.
We take a look at some of the reaction to its introduction...
The technology had a high-profile supporter, with former Liverpool defender Jamie Carragher:
VAR gets two very tight offside decisions spot on. Re take of a penalty spot on because Rice encroaches & then clears the ball away. VAR will have problems at times this season, but to criticise it when it does its job is just nonsense.
— Jamie Carragher (@Carra23) August 10, 2019
Sterling shoulders the burden of first call:
bro why is this VAR ting so mad at meee 😂😂 still happy with the three goals & moreover with a great victory to start the new season... Let the race begin 👊🏾 @ManCity pic.twitter.com/P02J5K7A1K
— Raheem Sterling (@sterling7) August 10, 2019
Former England forward Stan Collymore was irritated by some fan reaction meanwhile, tweeting:
VAR isn't for fans or pundits to enjoy.
— Stan Collymore (@StanCollymore) August 10, 2019
It's there to make more correct decisions in the sport
Really don't understand the fuss. Some spoilt fans moaning because their pub debate is more important than a correct decision?
Former England midfielder Danny Murphy wants VAR to be scrapped.
"Something doesn't feel right at the moment when we're watching football," Murphy told talkSPORT.
"I know the majority of what VAR did at the weekend was good - corrected some decisions that would not have been - but if you gave me the choice I'd knock VAR on the head.
"I agree with the Wolves manager (Nuno Espirito Santo). Two minutes celebrating, then you take away that joy. Then the other fans are celebrating a non-goal."
Murphy was also critical of City having a goal disallowed: "Do we really want to see goals disallowed for an offside that's an armpit ahead of another armpit by four millimetres?
"He might be offside by four millimetres by the letter of the law. But it's an entertainment business, isn't it?
"The Sterling goal that was allowed later, there was muted celebrations.
"You could see he was thinking 'Is this going to get taken away?' and the Man City fans were clapping. It was like applause at the end of the ballet!"
Match of the Day presenter Gary Lineker described himself as "pro VAR" on social media:
I’m pro VAR by the way. Always have been, but this ‘you’re either offside or you’re not’ argument will be fine once we have the technology to prove it...and it will come: guess it will need some sort of in-ball technology to determine exact moment of contact.
— Gary Lineker (@GaryLineker) August 10, 2019
Deal with it, is basically what former Man United defender and current England Women boss Phil Neville says:
"We've all voted for it, now let's get on with it."
— Match of the Day (@BBCMOTD) August 12, 2019
If anyone knows the pain of VAR it's Phil Neville. pic.twitter.com/eLr6YMKN6V
"We're going to have to play with our hands chopped off" - So said Wolves captain Conor Coady, who was far from impressed after VAR denied his side a winner at Leicester.
Leander Dendoncker fired home after his initial header struck the arm of team-mate Willy Boly, whose back was turned, at point-blank range. As with offside, there are no grey areas here - any touch with the hand which leads to a goal being scored will be penalised under the new handball law.
"If that is not a goal, there is a problem," a frustrated Coady said after the game.
"They have brought VAR in to rectify all those problems but I think it has gone too far the other way now."
'It's vital', says former referee Dermot Gallagher:
"No assistant referee would ever spot that..."
— Sky Sports News (@SkySportsNews) August 12, 2019
Dermot Gallagher believes Raheem Sterling's role in Man City's disallowed goal against West Ham was the perfect example of why VAR is vital to the Premier League. pic.twitter.com/ikyHAVIvBG
Former City striker Shaun Goater joked about the scoreline, tweeting: "Did @ManCity win 5-0 or we waiting on VAR?" while another former City player David Brightwell said: "It's going to be a looooonnnngggg season watching this farce."
It's going to be a looooonnnngggg season watching this farce
— David Brightwell (@brighty1971) August 10, 2019
Major League Soccer became one of the first leagues to use a video review system in 2017. Former USA player Alexi Lalas jokingly tweeted: "Welcome to the #VAR party @premierleague."
Welcome to the #VAR party @premierleague.
— Alexi Lalas (@AlexiLalas) August 10, 2019
Are you getting used to #VAR? 📺 pic.twitter.com/A1FZKoQYlG
— DW Sports (@dw_sports) August 12, 2019
With the entire Premier League season to come, this will be far from the last time VAR steals the spotlight.