Dimitri Payet (fitness) is unlikley to start for West Ham but could be a substitute. Andre Ayew is fit enough to make his debut, if selected. Manuel Lanzini, Aaron Cresswell and Gokhan Tore (all knee) will be missing.
Kurt Zouma (knee) is out for Chelsea, while Jon Obi Mikel is at the Olympics.
Did you know?
Chelsea are unbeaten in their last 10 Premier League meetings with West Ham United at Stamford Bridge (W7 D3) and have not lost at home to them in the league since a 3-2 defeat in September 2002.
West Ham were unbeaten against Chelsea in the league last season (W1 D1); the first time that they have achieved this since 2002/03.
Chelsea have won more points than any other Premier League side on the opening weekend of action (51 points).
Diego Costa has scored five goals in seven league appearances for Chelsea in August.
What the managers say
Chelsea's Antonio Conte: "Expectations for every team are very high. After a bad season like last year we are working very hard to be ready to start. We know this season will be very tough for every team in every game." (See Conte: We are ready)
West Ham manager Slaven Bilic: "We have a good squad – we’ve kept most of the players and we’ve added some players too. We are expecting them to improve us – we’d expect that even without them because we have been together for a year now and had a good last season." (See: Slaven Speaks - Chelsea)
