Manchester United fans all have the same theory as Chelsea squandered another winning position to see them slip four points off the pace.
Chelsea's dip in form continued as Jarrad Branthwaite earned Everton a valuable point after poking home 13 minutes before time at Stamford Bridge.
The result saw the blip continue for Thomas Tuchel's side, who now have just two wins in their last six and are without a clean sheet in that run.
Rafael Benitez visited his former side with the Toffees and was forced to soak up the Londoners' intense pressure before Branthwaite cancelled out Mason Mount's goal.
The Champions League holders last kept a clean sheet in the Premier League during their 3-0 dismantling of Leicester City at the King Power Stadium, in mid-November.
United then visited Stamford Bridge under Michael Carrick's brief stewardship and held the title-chasers to a point, after taking the lead through Jadon Sancho.
As a result of their latest slip in the title race, United fans have drawn up a theory around how Tuchel's defence has been found out. This is what they said:
Following their recent form, Manchester City and Liverpool have strengthened their grip in the 'three-horse title race'.
Ralf Rangnick's side have seen two of their top-flight clashes postponed due to a covid outbreak at the club. Meanwhile, Arsenal have managed to move into the top four at West Ham's expense but winning their games in hand could push United into the Champions League places.
In light of the postponement of the trip to Brentford and the visit of Brighton, the German's side are next scheduled to play Newcastle on December 27.
For Chelsea, they will be hoping they can shake off the United hoodoo when they visit Molineux on Sunday.
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