Ange Postecoglou was sacked by Nottingham Forest 19 minutes after Chelsea thrash the club 3-0 at the City Ground.
The 60-year-old departs after only 39 days and eight winless games after replacing Nuno Espirito Santo last month.
The pressure was on Forest boss Postecoglou, who knew that failure to beat Chelsea would increase his chances of the sack.
His side looked assured in the opening stages, and an unforced Chelsea error handed them a golden opportunity to take the lead through Elliot Anderson.
However, instead of pulling the trigger, he elected to cut inside and was crowded out by white shirts.
A Blues side missing the likes of Cole Palmer, Moises Caicedo, and Enzo Fernandez looked toothless in attack, with a tame Reece James free-kick from 30 yards summing up their first-half performance.
Yet, despite their distinct lack of attacking threat in the opening 45 minutes, they did create arguably the biggest chance of the half.
Blues boss Enzo Maresca, who was absent from the touchline after being shown a red card against Liverpool before the international break, had seen enough at half-time and made a triple substitution.
The changes breathed new life into the Chelsea attack with defender Josh Acheampong and winger Pedro Neto scoring just after half-time, prompting chants of “you don’t know what you are doing” from the home supporters after Postecoglou reacted by immediately bringing on Callum Hudson-Odoi, before captain Reece James sealed the victory for Chelsea with a sublime volley.
However, Malo Gusto was sent off for a second yellow card in a hectic last few moments of the match.
