Fulham boss Marco Silva says they must be at our best against West Ham.
Both teams are chasing European places this season.
Silva said: "They're a team that wants a response from the last game, like us.
"A team that is fighting to be in Europe again and for their position in the table. They want to probably climb up or keep their place.
"I'm not going to prepare a game thinking if they are going to be tired or not. They want to fight to win the game. They're playing at home with a big, big support, and it's going to be in that direction that we're going to prepare the game.
"We go to play against a very good side that the last three seasons in a row arrived in the quarter-finals of European competition, one of them they won [the whole competition].
"We really have to reach our best level to match them and to fight for the three points."