The Blues could not replicate last weekend’s impressive performance against Tottenham Hotspur, as they lost 2-0 to Southampton at Stamford Bridge.
A goal in each half from Michael Obafemi and Nathan Redmond, made it back-to-back home defeats for Chelsea for the first time since November 2011.
Despite the defeat, Chelsea still remain fourth on the log.
“The players do feel a bit of pressure at Stamford Bridge at the moment, with much being made of our home form recently.
“Consistency remains key and we need to win more at home quickly if we are to remain in the top four. The different systems we used today had pros and cons.
“It is the same story to the last few home games. We need to do more to break defensive lines, including hitting better crosses and final passes to create clearer chances.”
Lampard added that visiting teams are now making life difficult for the Blues which they are yet to find answers to.
He added: “Teams are making it difficult here. We are not making enough chances, we were at the beginning of the season. We are being asked a different question at home. At the moment we are not answering them.
“We do not manage to pick up that final pass. It felt the same as recent games. I think we have enough to be better than we were today. It needs to be a quick learning process now.”
Up next for Chelsea is a difficult trip to the Emirates where they will face Arsenal.
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