Chelsea recorded their first win under new manager Guus Hiddink as the Blues' resurgence under their new boss continued with a 3-0 win at Crystal Palace.
Oscar gave the Blues the lead in the first half before Willian and Diego Costa put Palace out of sight to complete arguably the champions' best performance of the season so far.
The victory is Chelsea's first on the road in the league since August and means Hiddink remains unbeaten after three games in charge.
It was one year to the day that Alan Pardew was appointed Palace manager and the clubs' respective reversal in fortunes since then remains remarkable given this time last year Chelsea sat top and the Eagles were in the relegation zone.
The teams' overall trajectories remain but Chelsea will take great confidence from a win that moves them up to 14th and demonstrated that European football may still not be out of reach.