It is fair to say this weekend could not have gone much worse for Chelsea.
After securing a dramatic 2-1 victory away at Atletico Madrid on Wednesday night, Chelsea faced another tough test as they welcomed title rivals Manchester City to Stamford Bridge.
However, disaster struck in the 35th minute when Alvaro Morata trudged off with a hamstring injury.
The Spaniard had been in fine form since joining from Real Madrid this summer; prior to today's game he had already found the net seven times in eight appearances.
His form has been so good, that any memories of Diego Costa leading the line would have been quickly forgotten by Chelsea.
But Chelsea's number nine now looks set to miss at least a few weeks after this set back.
Pep Guardiola's dominated the game and the home side failed to create any goal-scoring opportunities of note.
Eventually, Manchester City's dominance paid off as Kevin de Bruyne struck the winner with a thumping finish in the 67th minute.
But even though the result was disappointing, Chelsea fans will be extremely anxious about the severity of the Spaniard's injury.
When quizzed about Morata's injury by the media after the game, Antonio Conte has revealed what Morata told him to get substituted in the first half.
The Italian said "It's a muscular problem. I don't think it's serious.
"He said to me, I prefer to stop myself otherwise I risk having a bad injury.
"The doctor will check the situation but I don't think he's available for the national team."
Fortunately for Chelsea fans, these words hint that Morata's injury may not actually be as bad as some may fear.
Whereas that may provide a bit of relief to the reigning Premier League Champions, Chelsea fans will not like the look of the league table on Sunday morning.
They now sit in fourth place; six points behind the pair of Manchester clubs.
With the Premier League now taking a break due to Internationals week, Morata will have another week to recover before Chelsea visit Crystal Palace on October 14.