Pressure continued to increase on David Moyes and West Ham table after a 1-0 loss to Wolves at Molineux on Saturday.
Daniel Podence's goal on 48 minutes was enough for Julen Lopetegui's side to continue their revolution as they moved out of the bottom three, but it was another day to forget for Hammers, who suffered their third defeat in four games.
Podence's strike was his fifth goal of the season and moved his side up to 16th in the table, with a trip to Manchester City up next.