Southampton 1-2 Chelsea
Branislav Ivanovic struck late to snatch three points for Chelsea at Southampton.
The Blues came from behind at St Mary's to steal victory in the last two minutes and keep keep Guus Hiddink's unbeaten Premier League record intact.
The Dutchman is still yet to taste defeat in domestic fixtures but the Blues were made to work for this point as Fabregas cancelled out Shane Long's opener at St Mary's.
John Terry continued to remain sidelined with a hamstring injury as the Blues tread carefully with veteran's fitness ahead of Tuesday night's trip to Norwich.
Gary Cahill partnered Ivanovic, who skippered the side again in the absence of Terry, in the centre of defence as Hiddink named an unchanged side for the south coast clash.
There was an early blow for the Dutch boss though as he was forced into an early substitution as Pedro pulled signalled to the bench and Oscar came off the bench after just a few minutes.
It was far from glittering stuff from either side in the opening stages and Chelsea had to rely on some backs-to-the-wall defending to keep out Saints front two Charlie Austin and Shane Long.
Former QPR striker Austin came within a whisker of breaking the deadlock midway through the half when he spun away from two defenders and fired just wide of the upright.
But they were not to be denied and grabbed the lead shortly before the interval as Long latched onto a sloppy Rahman back pass and the Irishman dinked the ball over a hesitant Thibaut Courtois.
Rahman was seemingly punished for his mistake at half time as Hiddink hooked the full back and threw youngster Kenedy on at left back for the second period.
Referee Martin Atkinson soon began handing out yellow cards like they were going out of fashion as the second half became a scrappy, gritty affair, with Diego Costa targeted by the Saints.
It looked as though it was going to be a fruitless afternoon for Hiddink's boys until Lady Luck smiled down on the Blues at St Mary's.
Cesc Fabregas swung in a cross, which appeared to be aimed towards Eden Hazard, and it fooled Fraser Forster and crept all the way in to level things up.
And there was better to come in the dying moments as Ivanovic climbed well and powered a header past Forster to turn the tables and complete the job for Chelsea.
Chelsea: Courtois; Azpilicueta, Cahill, Ivanovic (c), Baba Rahman (Kenedy, 45); Mikel, Fabregas; Pedro (Oscar, 7), Willian, Hazard (Matic, 90); Diego Costa.
Subs (not used): Begovic, Loftus-Cheek, Traore, Remy.