Salah has been demoted to the bench for Saturday's early kickoff.
After the midweek defeat at Everton, along with Salah, Darwin Nunez and Dominik Szoboszlai have also been dropped.
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Klopp said before kickoff: "We have to show it on the pitch.
"Your motivation is to win the game you play and not think about anything else.
"Against a strong side, you can see the attacking threat of West Ham is a big one.
"We need to not get carried away, we need to be intense from the start and step-by-step we can get a real foot in the game and win it - it will be difficult.
"The only way you can change is by taking your chances.
"We have to play the football game, it is not that difficult the boys are brilliant and that is why we have the amount of points we have."