As the Christmas season unofficially began on December 1, Ole Gunnar Solskjaer looked anything but merry.
Manchester United had been held to a 2-2 draw at home by promoted Aston Villa and the Red Devils' performance was utterly rancid for much of the game. Solskjaer appeared helpless at full-time.
Ahead of a particularly bleak run of mid-winter fixtures, reports suggested Solskjaer could join Santa in expecting to be burdened with the sack for Christmas. Two games to save his job, some said, with Mauricio Pochettino looming large.
Those two matches; Jose Mourinho's Tottenham and Manchester City in the derby – it wasn't the sleigh bells that were ringing.
Some might have been content with two points, yet they've managed to take six and left City's title defence in tatters after a 2-1 win over the champions.
Much of the build-up was dominated by 'we're back' talk among both sets of supporters. City had crushed Burnley comprehensively, while United produced arguably their best display under Solskjaer in a 2-1 win over Tottenham.
Saturday's performance left no such room for argument – it was undoubtedly the greatest of his tenure.
So much of the Norwegian's time at the helm has been mired by worryingly erratic form – one week they barely manage to salvage a draw against Villa, showing a concerning lack of desire, and then follow that up with a genuinely laudable performance at home to a resurgent Spurs.
Such inconsistency has understandably led to questions over Solskjaer's game-management, with United frequently struggling against opposition that sit back despite boasting a solid record of only two defeats in 11 meetings with 'big-six' opponents and Leicester City before the derby.
Solskjaer did little wrong on Saturday, however.
A devastating first half an hour showed just how good this United team can be, particularly going forward.
The fluid front three of Daniel James, Marcus Rashford and Anthony Martial was electric, while the much-maligned Jesse Lingard showed the kind of technique and drive not seen from him for a long, long time.
United's strengths are by no means a secret – they are blessed with immense pace in attack and are at their best hitting teams on the counter.
City fell into a trap entirely of United's making.
The midfield pair of Scott McTominay and Fred sat extremely deep, while the front four also dropped well back, essentially becoming a second midfield. As such, the gap between United's defence and attack was often minimal, allowing them to break as a unit.
The dynamism and agility of United's attack was plain to see for both goals – firstly Rashford driving into the box and winning the penalty that he converted, before James and Martial linked for the Frenchman's well-worked goal.
But United's effectiveness was about more than just three players running really, really fast. Defensively they had several players who were imperious.
Aaron Wan-Bissaka dealt with Raheem Sterling impressively, making five tackles and seven clearances in a fine display, while McTominay was similarly impressive. The Scotland international won possession back via three tackles, three interceptions and came out on top in 81.3 per cent of the 16 duels he was involved in.
Added to that, Fred enjoyed his best match for United, creating two chances and showing a general awareness that could rarely be associated with the Brazilian previously. On this evidence, you can begin to understand why Pep Guardiola had been so keen to bring him to City.
City's second-half desperation predictably saw United come under pressure and, for a moment it looked like the Red Devils would yet again cave and throw away a lead after Nicolas Otamendi pulled one back.
But it wasn't to be.
While reservations over Solskjaer's suitability for the role will remain as long as his team continue to falter against teams they should beat, there's no doubt in his ability to squeeze every last drop out of his players in the big games.
And in the biggest of matches, United rose to the occasion to leave City 14 points adrift of the summit, their title hopes torn to shreds like so much festive wrapping paper.