Chelsea 5 Manchester City 0
Kevin Keegan's side looked all at sea in West London and took a real hammering against a rampant Blues side who are continuing their push for a Champions League spot.
Jimmy-Floyd Hasselbaink gave Claudio Ranieri's side the lead after 37 minutes when he converted Gianfranco Zola's cross, and John Terry doubled the lead by heading in Graham Le Saux's corner two minutes before the break.
Mario Stanic added a third on 58 minutes and Frank Lampard get on the end of a neat one-two with Carlton Cole to make it 4-0 after 69 minutes.
William Gallas made it five late on and Sun Jihai ensured a truly miserable day for City as he was sent off in the final minute for collecting his second bookable offence.
Ranieri will be delighted with his side's performance as they go into their vital FA Cup clash in high spirits, while they also keep up their hunt for Champions League football after strengthening their fourth place.
Keegan would have been tearing his hair out on the touchline after watching some shocking defending from his Citizens side that saw them thoroughly outclassed in every department.