Arsenal have now fallen victim to a referee blunder in each of the five Premier League matches they have dropped points in.
The North London side were denied all three points against Brentford on Saturday afternoon because VAR failed to spot an offside.
Brentford star Christian Norgaard was in an offside position when he crossed for Ivan Toney to get the equaliser.
- Al-Nassr boss Garcia reveals Ronaldo’s team-mates are treating him differently
- Rio Ferdinand reveals Potter mistake Mourinho would not have made after handball drama
- Man Utd squad’s view on Greenwood returning as Ten Hag gets in touch with him
The PGMOL contacted Arsenal over the incident to explain what led to the error, and it was VAR Lee Mason who failed to draw the lines to check if Norgaard was offside.
It is not the first time poor officiating has cost the Gunners this campaign, and they could be more than two points clear at the top of the league if right decisions had been made.
Here are the other notable incidents where a refereeing mistake cost the league leaders.
1. Arsenal suffered their second Premier League defeat of the season at Goodison Park last week.
But moments after James Tarkowski headed the hosts in front, which proved to be the winning goal, Arsenal felt they should have had a penalty.
Gabriel appeared to have been tripped in the box by Neal Maupay but referee David Coote gave Everton a free-kick instead, and his decision stood despite the VAR check.
Former ref Peter Walton told BT Sport that the penalty may not have been awarded because Gabriel initiated the contact.
2. The Bazillian defender was also denied a penalty during January’s 0-0 draw with Newcastle. He was manhandled by Dan Burn in the penalty area and he felt the contact was enough to go to ground.
But the referee and VAR ignored Arsenal’s penalty pleas, much to the annoyance of Gabriel who even took to Twitter to vent his frustrations.
The Sky Sports pundit were unanimous in their belief that a spot-kick should have been awarded, as was Arteta who blasted the “scandalous” decision.
3. The Gunners drew 1-1 with Southampton but could have had a 2-0 lead if Gabriel Jesus was given a penalty.
The Brazilian was dragged back by the Saints’ Duje Caleta-Car and tumbled over, but referee Robert Jones felt there was not enough contact.
Yet on the same weekend Armando Broja got a penalty for Chelsea after being fouled in similar manner by Manchester United midfielder Scott McTominay.
4. The Red Devils inflicted a first defeat of the campaign on Arsenal in September but the game could have had a different outcome if Martinelli’s opener had stood.
The Brazil international raced through to score but after a VAR check the goal was cancelled with Martin Odegaard deemed to have fouled Christian Eriksen in the build-up.
The Premier League later concedes the decision to disallow the goal was incorrect.