Nigeria midfielder Mikel Obi made his first Chelsea start of the season but he was helpless in preventing a depressing 3-1 Premier League defeat at Everton.
It was Mikel’s third start in 2015 but he was taken off after 55 minutes for Kenedy as the champions chased the game.
Scotland forward and first-half substitute Steven Naismith was however the star of the afternoon as he bagged a brilliant hat-trick.
Everton were full value for their win as they threatened in the early stages when Romelu Lukaku leapt unmarked inside the box, but he was thwarted by some commanding strength from stand-in Chelsea stopper Asmir Begovic.
Chelsea failed to offer much going forward, and Everton soon made them pay when Naismith linked up with Brendan Galloway to head the defender’s cross beyond Begovic after some standout movement in the box.
The Toffees sensed that another goal could be in the offing, leaving Seamus Coleman to charge down the flank and whip a ball in for Arouna Kone, who saw his header turned away smartly by a besieged Begovic.
The Chelsea stopper could not hold out for much longer, though, as Naismith returned to bag a second with a stunning solo effort into the bottom-left corner from all of 25 yards out.