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Mkhitaryan thought he had found a fourth goal when he poked home in the 75th minute only for the video assistant referee to rule it out for an agonisingly tight offside.

There was frustration for Arsenal when Mikel Merino's smart header was ruled out after a Video Assistant Referee check early in the second half.

A five-minute delay followed before the decision was overturned after a video assistant referee review.

Of course, we cannot discuss the current quality of Premier League entertainment without mentioning three words: video assistant referee.

Giovanni Di Lorenzo appeared to be fouled, but, after a review by the video assistant referee, the decision was overturned.