Angry Chelsea coach Carlo Ancelotti labelled his side "frightened" after a shocking second-half display cost them the chance to go back to the top of the Barclays Premier League.
Chelsea looked to be on course for three points thanks to Didier Drogba's 42nd-minute penalty but Everton substitute Jermaine Beckford headed an equaliser four minutes from time to clinch a 1-1 draw for the visitors. The Blues have now won just once in their last six league games and Ancelotti was clearly rattled by another sub-standard display from the double winners.
"I am disappointed and angry," declared Ancelotti. "Not just because of the result. We played good football in the first half and the second half was totally different. We played the long ball. We were a little bit scared. I didn't like this.
"We are working to play a particular kind of football and I don't understand why we have changed it. We have to look at it and I have to understand and change it.
"I don't think it is a problem of concentration. Everybody knew it was a very important game for us to move on from the difficult moment we are still in. We have to do better day-by-day on the training ground, in the training sessions.
"I am worried yes, because we haven't won a lot of games. The second half was totally wrong. We have to do better."