West Ham United came from behind against Chelsea to secure a second consecutive 1-1 Premier League draw on Saturday.
Chelsea started strongly at London Stadium and led through João Félix's 16th minute goal.
The Hammers would not wilt though, and were level within 12 minutes, as Emerson snuck in at the back post to finish Jarrod Bowen's flick from a Vladimír Coufal cross.
Tomáš Souček had what would have been a late winner ruled out for offside, following a VAR check, as the London derby spoils were shared.