Chelsea beat Huddersfield Town 3-0 in Maurizio Sarri's first Premier League match as head coach.
2018 FIFA World Cup winner N'Golo Kante opened the scoring on 34 minutes with a first-time volley from Willian's cross.
The summer signing converted a penalty after Marcos Alonso had been fouled by Christopher Schindler.
Eden Hazard came off the bench to assist Pedro in the second half, while new Chelsea goalkeeper Kepa Arrizabalaga earned a clean sheet on his debut at John Smith's Stadium.
Huddersfield: 19 Aug v Man City (A)
Chelsea: 18 Aug v Arsenal (H)