Last season Jose Mourinho called Arsene Wenger a specialist in failure; last Sunday's lifeless 2-0 defeat went a long way into validating the crude statement.
The question now is not whether Wenger should face FA sanctioning for pushing Mourinho, it is how long do the Arsenal board wait to push Wenger out the door?
The match was a microcosm of everything that has been wrong with Arsenal ever since their last Premier League title winning side in 2004.
During the match, Arsenal failed to register a single shot on target for the first time since 2003 - this despite having 53% of possession. Additionally, the two goals Chelsea scored were wholly preventable if Arsenal had a top class defensive midfielder - except Arsenal haven't had one since Gilberto Silva left and Flamini (who has since regressed) left the club in 2007.
Again, Arsenal were made to look like a featherweight in the ring with a heavyweight; a baby getting its lollipop taken by an adult; a sheep in the lion's den.
The bigger picture sees Arsenal's nine points behind Premier League rivals Chelsea at the beginning of October. The manner of Arsenal's defeat against Borussia Dortmund suggests for yet another year the Champions League last 16 is as far as Arsenal will go.
In the past, a lack of spending power was used as an excuse for Arsenal's shortcomings. However, in the past two years spending has picked up as Arsenal reap the rewards from sponsorship money, new TV deals and as payments for the Emirates Stadium becomes less of a burden.
If anything, with FFP sanctions taking affect, Arsenal are arguably the second biggest financial power behind Manchester United. Yet, Wenger falsely keeps using a lack of money as an excuse:
“At the end of the day, they have a financial power and they used it in a very efficient way when they had the chances… Their individual players who can make the difference made the difference — Hazard and Costa.”
Wenger's example of Hazard and Costa is a rather misguided one considering the duo cost a combined fee of £64 million, £13 million less than Arsenal's Mesut Ozil and Alexis Sanchez - both who were subdued against Chelsea.
To add further embarrassment, Arsenal have the third highest wage bill in the Premier League, spending £180 million annually - more than what Chelsea are currently spending.
It seems the more Wenger spends the worse his send gets. The double winning team of 98 Wenger largely inherited was equally as talented as this team (see Bergkamp for Ozil, Overmars for Sanchez), yet they had far more character.
The all-conquering side of 2002-2005 was simply on another level and was the stuff of legends.
Even the financially restricted teams between 2006 and 2011 were far more talented, albeit equally hamstrung on the big stage.
Wenger should be taking on all comers with Arsenal's new found wealth, instead he is ploughing down the back of the sofa for a new excuse.
Should Arsenal, not challenge for the title or at least reach the semi-finals of the Champions League by the season's end, the Arsenal board should do Wenger a favour and relieve him of his duties.