Analysis: Problems pile up for Potter's team

One of the loudest cheers from the home support came in second-half stoppage time when Mads Hermansen claimed a cross.

Of course they were ironic cheers from those that remained in the stadium, after a mass exodus began around the 54th-minute mark when Moises Caicedo struck Chelsea's fourth goal after a mistake from their keeper, a £20m summer signing from relegated Leicester City.

This was not the fresh start either Hermansen, or the wider squad, will have wanted.

Three of the Chelsea goals came from corners, with blame also likely to fall at the feet of West Ham's outfield players.

An example was how Chelsea's 5ft 9in left-back Marc Cucurella managed to flick on a corner, setting up Joao Pedro's equaliser, against a team playing with three centre-backs.

There was another moment at the end of the first half when midfielders Enzo Fernandez and Caicedo were allowed to play six or seven short passes between each other without being closed down.

That signalled the first sign of discontent for a side who have gone from having a fearsome home atmosphere to becoming an easy place to visit.

There is pressure on the players, manager and owner to put things right. After all, Julen Lopetegui was sacked in January after just 22 matches.

Graham Potter has a worse record than his predecessor, earning less than a point per game in his first 21 league fixtures.