The Hammers have completely transformed into European football hopefuls, with a top four finish not out of the question at all.
The defeat to Newcastle United last weekend, though, was a dent to their Champions League hopes and they sit a place below their visitors.
Speaking of, Chelsea head into this weekend placed fourth in the Premier League standings, ahead of West Ham by just goal difference.
The Blues have seen a strong start under Thomas Tuchel become a thing of the past, having failed to win three of their last six games in all competitions, with their most recent clash ending in a goalless draw against Brighton & Hove Albion.
West Ham Vs Chelsea Lineup
West Ham Utd XI (3-4-3): Fabiański, Diop, Balbuena, Ogbonna, Coufal, Noble, Souček, Fredericks, Fornals, Lingard, Bowen
Chelsea XI (3-4-2-1): Mendy, Christensen, Silva, Rüdiger, Azpilicueta, Kanté, Jorginho, Chilwell, Mount, Pulisic, Werner
Kick off is at 17:30 (GMT +1).