The Hammers have picked up just 10 points and are yet to taste victory under David Moyes who has lost three and drawn one of his first four games in charge.
There was some encouragement in the performance at Manchester City last time out even if it ended in another defeat for the Hammers.
Moyes now faces consecutive London derbies at home against Chelsea and Arsenal and must pull a rabbit out of the hat to get his side back on track.
The Scotsman looks set to make three changes to his side for the visit of Antonio Conte's side in the early kick off on Saturday and could also have a major boost on the bench.
Winston Reid in for Edimilson Fernandes
Reid should be back for the crucial game against the Blues and will come back into defence which will push Aaron Cresswell out to wingback.
Marko Arnautovic in for Arthur Masuaku
Masuaku blows hot and cold for West Ham while Arnautovic has started to find his feet under Moyes. The Austrian was dropped to the bench as West Ham went ultra defensive against Man City last time out. But he will come back in for a home game where fans will be expecting their side to show they are up for the fight to survive by trying to win the game and Arnautovic is a match winner on his day.
Chicharito back on the bench?
Javier Hernandez has been missing for the last four games and during that time West Ham have scored just twice. He is back in training but will not be risked from the start against Chelsea but should take his place on the bench.