West Ham Starting XI
Darren Randolph
Cheikhou Kouyate
Jose Fonte
Winston Reid
A. Cresswell
P. Obiang
Mark Noble
Sofiane Feghouli
Manuel Lanzini
R. Snodgrass
A. Carroll

Chelsea Starting XI
T. Courtois   
G. Cahill   
David Luiz   
Azpilicueta   
Marcos Alonso   
Fàbregas   
V. Moses   
E. Hazard   
Pedro   
N. Kanté   
Diego Costa

Looking at the starting lineup, I think Chelsea should win this match but it wont be easy.