A loss in a London derby is always disappointing. It is now three games without a win for the Blues and Lampard will want his team to bounce back quickly before questions start being asked. There were a number of factors behind the defeat, but what went wrong for Chelsea against West Ham?
Changes to the team
The performance on Saturday was not up to the high standards set by this Chelsea side in recent weeks, and part of that was down to the number of changes made to the starting line up. Five changes were made from the team that started against Valencia on Wednesday. A number of these changes were made due to fitness issues, so it is hard to blame anyone, but it clearly had an impact.
Olivier Giroud and Pedro, who have found chances hard to come by this season, seemed to lack match sharpness and found it difficult to get into the game throughout.
Losing your top scorer is never easy, but it became very apparent how much this Chelsea side relies on Tammy Abraham on Saturday.
Whether it is the lack of strength in depth up-front or just the value that Abraham brings to the side, it was clear to see that the Blues were not the same side without the 22-year-old leading the line. He not only possesses the killer instinct in front of goal but also has the ability to link the play and create chances for his teammates with his movement and quick thinking.
With 10 goals already to his name in the league this season, Lampard will be hoping to have him back as soon as possible.
The midfield battle was lost
It is crucial in any victory to win the battles in the midfield. This is something Chelsea failed to do on Saturday, as Declan Rice and Mark Noble ran the show for the opposition.
Mason Mount struggled to make much of an impact in the no.10 role, and West Ham did well at breaking up Chelsea’s normally fluid midfield passing.
It was clear that the Blues missed N’Golo Kante. Having struggled with fitness all season through a lack of rest, Lampard made the decision to give the Frenchmen a rest. In the long term, this may have been a good decision, but the Blues really could have done with him on Saturday.