Chelsea now sit in the bottom five of the Premier League table after a third loss of the season at Everton's Goodison Park.
Steven Naismith scored three goals against the Blues, whose defense has now conceded the most goals of any team in the league so far.
Chelsea winger Eden Hazard had opportunities in the second half, but he had two of his clear cut chances deflected. In the end, it was Everton who sealed the game after a counter-attack goal late in the second half.
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Manager Jose Mourinho is a master tactician, but his methods do not seem to be working right now. Maybe there are problems within the dressing room, and maybe other managers in the league have caught on to his team's tactics. Whatever it is, the west Londoners are not at their best by a long shot.
One possibility is that his team is fatigued. Chelsea had a very small squad for their title challenge last season, and that group quickly meshed as a solid unit. They kept rotation to a minimum and learned to play with one another, and simply outclassed the other underperforming top teams.
Players like Ivanovic and Terry played so many minutes last season, and they put 110% of their effort into defending every game. That quality saved Chelsea's attack from looking weak due to the amount of clean sheets they kept.
A short-term Chelsea project?
The problem now is that these players who put in so much effort now have much less in the tank to defend their Premier League title.
Manager Jose Mourinho has added backup options in his defence this year, but he may have placed too much faith in his current back four. Papy Djilobodji and Baba Rahman have performed well at Nantes and Augsburg respectively, but they are not good enough to replace Ivanovic and Terry.
There was another mistake made by Mourinho, and that was to sell his old rotation options in attack. Players like Kevin De Bruyne and Andre Schurrle are far too good to be sitting on the bench every match. Perhaps Eden Hazard and Diego Costa are better overall, but rotating players like De Bruyne and Schurrle into the team would have kept the attack fresh and hungry for goals in the second half of 2014-15, when Chelsea were scraping out narrow wins regularly.
Once again, Mourinho has reinforced his team with additions, but Spanish winger Pedro seems to be the only one who was a good buy. Spending £11 million on Brazilians Kenedy and Nathan seems insane when Chelsea are sending Juan Cuadrado and Mohamed Salah out on loan at the same time.
Salah and Cuadrado are players who were brought in and never played enough minutes to hold down a first-team place. Mourinho did not seem to like their playing style from moment one, which makes the average Chelsea fan wonder why on earth they were brought in in the first place.
Will the Portuguese tactician spend a year revitalising his side and challenge seriously for the title next year?
There is already an eleven-point gap between City and Chelsea, and on the Citizens' current form it seems unlikely that they will drop that many. So, in turn, do the Chelsea board go in a different direction - or do they stick with Mourinho and allow one season of no trophies?
There is a possibility Chelsea will win the Capital One Cup or the FA Cup, but there is no way Mourinho would think that was up to his standards. If his goal is to win the Champions League with the London side in the next two seasons, his team better start performing a lot better.