Liverpool manager Jurgen Klopp has warned his players to be prepared for a much-changed West Ham side from earlier in the season.
The Reds take on Manuel Pellegrini's side at the London Stadium on Monday night as they look to re-establish their five point lead over Manchester City at the top of the Premier League table.
Klopp's side beat West Ham 4-0 on the opening day of the season, and despite the Hammers losing their last three games, the boss insists they are a "different cup of tea."
“We started against West Ham with a brilliant game from us and not a very good game of West Ham. That day they had a new manager and a lot of new players,” he said.
“They had a really bad start, I think they had maybe only two points after six match days, but since then they are nearly a top-six side. That's what we should expect.
“(They have the) most experienced manager in the Premier League at the moment, really good football team, good signings in defence, experience in the full-back positions.
“(Declan) Rice, fantastic development next to (Mark) Noble in midfield, experience and youth. Then you have the wings, really strong, (Felipe) Anderson fantastic signing, and Marko Arnautovic an outstanding striker.
“(Samir) Nasri is now around, (Robert) Snodgrass is back on track, Lukasz Fabianski in goal, it's a really good football team. That's what we have to be ready for again.
“We can't compare with the first game of the season. We expected a difficult game that day but it was not so difficult for two reasons: we were really good and they were not ready.
“Now they are ready and it's a completely different cup of tea.”