Newcastle United's appeal against Fabian Schär's red card, picked up during Sunday's match against Arsenal, has been unsuccessful.
Schär was dismissed by referee Mike Dean in the 90th minute of the game following a tackle on Gabriel Martinelli.
An independent panel reviewed the incident following United's appeal to the Football Association but has upheld the decision.
The Swiss defender will miss United's next three matches against Leicester City, Manchester City and Sheffield United.