Chelsea and Manchester City both lost at home in the Premier League on Saturday.
Maurizio Sarri’s men went down 1-0, because of a second-half goal from Jamie Vardy.
City got the opportunity to close the 4-point hole among themselves and pioneers Liverpool, however endured their first annihilation at home this season.
The hosts led the pack through Ilkay Gundogan, yet Palace answered with three goals from Jeffrey Schlupp, Andros Townsend and Luka Milivojevic.
In spite of the fact that Kevin De Bruyne pulled one back for the bosses, it was simply a reassurance at last.