Thomas Tuchel has admitted he is finding it difficult to rationalise Chelsea's latest form slump.
The Blues have won just once in four matches after Thursday's surprising draw with Everton.
Asked if he was concerned about the streak, Tuchel said: "I would be more concerned if we were totally out of form, concede the first goal and then struggle to come back.
"I would be easier to analyse. I don't think it's too easy to analyse our situation."
Tuchel's side are now just four points behind league leaders Manchester City.
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