West Ham manager Slaven Bilic wants his team to bounce back immediately after their disappointing derby loss to Tottenham last weekend.
The Hammers went down 4-1 in last Sunday’s clash to make it three matches in a row without a win for Bilic’s side and the Croatian the defeat had affected everyone at the club.
“The feeling was the same. The players were like myself, like the whole staff, the whole team, the whole club – everybody,” he said.
“We were hugely disappointed straight after the game and we were angry at the way we played. The way we represented West Ham, it was very clear.
“In some games you are happy, you are satisfied at the way you played and you can blame other things.
“In that game, it was only us who were to blame.
“It’s not good to lose the game but we knew straight after the game that they played a really good game. Spurs had a good shape, good form, so credit to them. But we helped them a lot in the way we played.
“It is simply not acceptable and we will do everything we can to bounce back on Sunday.”
West Ham, who are currently sixth in the Barclays Premier League, face struggling West Brom on Sunday.
The Hammers have gone eight league games without a clean sheet and have won only two of their last seven in the top flight.
Bilic wrote in his Evening Standard column: “For us, we need to get back to winning ways. We are a really good team and have showed that on a lot of occasions this season.
“But, we are only good if we are totally focused, moving and thinking as a unit. We can’t continue to make individual mistakes that are leading directly to goals.
“Firstly, we must stop those errors but also we have to react quicker as a team when they are made.”
He added: “Going forward, coaches often talk about transitions and even for Barcelona they are the most important part of the game because if you do it quickly, your best players have the space to play.
“We were second best in that aspect against Spurs. If we improve our transitions and tighten up defensively, we can get the positive result we want.”
Mark Noble received his fifth yellow card in last weekend’s clash with Spurs and is suspended this weekend but Bilic has said either Pedro Obiang or Alex Song will start in his place. Both have struggled with injury this season but are back in training with Song making his first appearance as a substitute against Tottenham.