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Chelsea have now gone three games without a win in all competitions as the Blues have suffered back to back losses in the Premier League for the first time since January.
Chelsea were beaten 1-0 by a struggling West Ham side, and it could have even been worse as VAR ruled out Michail Antonio’s second-half goal.
Chelsea failed to threaten West Ham goalkeeper David Martin for most part of the game, and Lampard admitted after the game that his side lacked creativity in the final third to open up the West Ham defence.
Lampard said: “We were below par in many parts of our game, it’s not one, but we didn’t do enough in the final third. That’s been a little bit of the story in our last three games.
“They were different, with Man City we got in the final third a lot and didn’t do quite enough with our choice of pass or cross or shot, similar to Valencia.
“Today we didn’t get in there quite as much, but we need to be more inventive and generally we have been this season. My gripe this season has been more that we’re not converting enough of the chances that we’re making. Today wasn’t quite that, we didn’t quite create enough.”