On Saturday afternoon, the world watched on in anticipation as Chelsea welcomed Pep Guardiola's high-flying Manchester City to Stamford Bridge.
It was the biggest game of the season so far, a true test of the visitors title credentials and come the end of the game, they had passed with flying colours.
Former Blues man Kevin de Bruyne gave City a deserved 1-0 win and their dominant display warranted a bigger winning margin.
It was a disappointing day for Antonio Conte, who was missing key man David Luiz from his defence.
MORATA LIMPS OFF
In the early stages of the game, summer signing Alvaro Morata appeared to have the better of the City defence with his physicality and sly movement.
However, he had to be taken off midway through the first half with a hamstring injury and was replaced by Willian.
Chelsea fans were noticeably concerned by the departure of their top goal scorer and on Tuesday, they were brought some terrible news.
BAD NEWS FOR CHELSEA
The Spanish Football Federation announced that Morata had picked up a grade two hamstring injury and could miss six weeks of action.
It was thought that his exit at the Bridge was a precautionary measure and it appears the player thought the same.
Morata posted a tweet stating that he was looking to make his comeback in the Crystal Palace game after the international break but promptly deleted the post.
MORATA'S DELETED TWEET
Clearly, the player was unaware of the severity of his injury and was hoping for a speedy recovery. Naturally, Chelsea fans were a tad concerned.
CHELSEA FANS REACT
It's a similar scenario to Benjamin Mendy, who was optimistic that a knee injury he picked up against Crystal Palace was not serious. However, he would later be ruled out for a number of months.
Conte now faces a big selection dilemma because he clearly does not have much faith in Chelsea's second-choice centre-forward, Michy Batshuayi.
Instead of bringing the Belgian on against City, the Italian coach opted for Willian, with the Brazilian turning in a very disappointing display alongside Eden Hazard up front.
The former Marseille man scored a priceless winner against Atletico Madrid and he may have to be the option the manager turns to.
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