There was a moment in the dying seconds of the first half of Saturday's draw with Wolves that hit home why this season should be Cesar Azpilicueta's last in a Chelsea shirt.
Going for a loose ball after a Chelsea attack had broken down, Azpilicueta messily attempted to shut down the faster Pedro Neto, seeming to be first the ball, the defender bizarrely turned his attention to the man. Eventually fouling Neto but the official playing advantage as Willy Boly played in Rayan Ait-Nouri who fortunately blasted over.
It was only one of several recent errors in judgement from the club captain which has brought his growing frailties into sharp focus. Deciding to grab onto Bukayo Saka against Arsenal, giving away a penalty that sealed a defeat. The lapse in concentration at Goodison Park that directly led to Richarlison's winner. But these are not isolated, nor can they be easily dismissed.