On an evening of raw Premier League action, Manchester City took on West Ham United at the Etihad - in what was a comeback night in the citizens' eyes.
The blues looked to ease the pain of their mid-week Champions League loss by continuing their sublime start to the season.
Only to see a repeat of the same, a determined and unified team set to disrupt City's flair and catch them off guard.
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Two goals inside the first half an hour for West Ham; the first being a Victor Moses rocket and the second coming from a predatory Diafra Sakho, saw the Hammers through to a shock win despite City's constant pressure.
The statistics say it all - the blues finished the match with 72% possession and ten shots on target compared to West Ham's two, both of which resulted in Hammer's goals.
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As much as City played well and carved West Ham open on plenty of occasions - the Irons' solidarity, along with slices of luck, condemned the citizens to their first defeat of the season.
However, two bright lights shone for the blues on a fairly gloomy afternoon in Manchester.
These two glimpses of sunshine on a grey day for City, were summer signings - Kevin de Bruyne and Nicolas Otamendi.
The two cost a combined £88 million. Otamendi being the most expensive defender in the Premier League, whilst De Bruyne takes the title of second most expensive player in British history overall.
One word for their match reviews, stupendous. De Bruyne took on the creativity role in place of an injured David Silva in real style; with great through balls in-behind a Hammers back line countlessly.
The 24-year-old's quality was summed up by a terrific strike outside the 18 yard box; the former Chelsea man fired a direct shot into the bottom corner ahead of an out-stretched Adrian to pull a goal back before half time.
His close control and direct attacking play kept West Ham on their toes all game - not to mention his acute eye for a cross field pass.
The likes of Aguero, Navas and Toure gained joy off the Belgian's supply as they searched for an equaliser, but failed to turn this assistance into results as they miss-fired.
It's hard to describe watching Kevin de Bruyne on the ball - he had a certain presence about him. Never did he pass the ball aimlessly to the side, the attacking midfielder was always looking for an opening.
He looked agile, skilful and aware. A real plus point to City's shock home defeat - almost a certain figurehead for the coming campaign.
Another new boy to impress was centre-back, Nicolas Otamendi. The Argentine looked like he'd been playing in a blues jersey for years.
Remarkably good performance for his debut - despite being part of a defence that leaked two goals.
He was many things - hard in the challenge, composed on the ball, gifted at anticipation but most of all; he commanded the City back-line.
If Vincent Kompany cast a captain's eye over this game; could he potentially be worried about his spot?
Probably not, as Otamendi and Kompany will most likely partner each-other judging by the 27-year-old's performance tonight.
City's strength in depth shown at the Etihad despite the score-line, with the performances of their new blues being a real confidence booster for their fans, ahead of a long and anticipatory season.