- Chelsea beats Crystal Palace 3-0
- First win under interim boss Hiddink
- Tottenham held 1-1 at Everton
The 3-0 win was only the second victory on the road this season for the reigning English Premier League champion but came at a cost as Belgium international Eden Hazard limped off in the first half.
Hazard was Footballer of the Year in England last season, but has gone 30 club games without scoring in Chelsea's troubled start to the current campaign.
The 24-year-old was seen to be struggling after attempting a shot and was soon substituted, Hiddink revealing after the match he would be undergoing an MRI scan on a groin injury.
Hiddink, who replaced the sacked Jose Mourinho last month, had previously overseen two draws although Chelsea did beat Sunderland 3-1 just before he was officially appointed.
Those signs of improvement were underlined by the sort of performance which marked Chelsea's title charge last season under Mourinho.
Hazard's departure did not disrupt the visitors and fine passing by Cesc Fabregas and Costa left Oscar with a comfortable opening to side foot home after 29 minutes.
Palace, so impressive this season, was unable to respond although Wilfried Zaha should have done better with a chance which Thibaut Courtois saved.