Eddie Howe made just one forced change to the side that beat Paris Saint-Germain 4-1 in the Champions League heading into the game with Elliot Anderson replacing the suspended Anthony Gordon on the left-wing.
West Ham took an early lead after Emerson caught out a charging Nick Pope before squaring the ball back to Tomas Soucek for a simple tap-in.
After an impressive run of form, The Magpies were lacking ideas in the opening 45 minutes at the London Stadium as they found themselves behind.
Here are the half-time player ratings from the match...
9. Miguel Almiron - 6
Came close with a curling effort from outside the box in the first half. Linked play up well in the second half during Newcastle’s sustained period of pressure. | Getty Images
10. Elliot Anderson - 6
Deployed on the left-wing initially before interchanging with Alexander Isak into a more central role. Showed some good foot-work but wasn’t able to penetrate. | Getty Images
11. Alexander Isak - 8
After a quiet first-half, put a good ball in for Dan Burn in the second half before grabbing the equaliser with a composed finish. Put The Magpies in-front moments later with another tidy tap-in. Denied a hat-trick by the post. | Getty Images
