Manager Maurizio Sarri is becoming increasingly accustomed to being a victim of vocal criticism from Chelsea fans after once again being singled out during the lucky Premier League win over Cardiff City.
Victor Camarasa swept the Bluebirds into a deserved first-half lead as the Blues' ponderous tactics looked set to be their undoing away from home again.
The poor display was soundtracked by chants from the visiting supporters of "Sarri out".
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Chelsea would eventually turn the game around, with Cesar Azpilicueta's finish from an off-side position and Ruben Loftus-Cheek's deft header - either side of Antonio Rudiger escaping a possible straight red card - keeping the West Londoners in contention for a Champions League place.