Newcastle took Fabian Schar's concussion history into account before deciding to leave him out of Saturday's 2-0 defeat at Manchester City.
Medics decided to take no chances with the Swiss defender after a collision with Manchester United's Lisandro Martinez in last weekend's Carabao Cup final defeat even though he completed the game at Wembley.
Schar was involved in a serious concussion incident playing for his country in 2019 when he was knocked unconscious.
Newcastle manager Eddie Howe explained his absence at the Etihad.
'He took a nasty knock to his eye and cut and bruise around that area (at Wembley),' Howe said.