Ross Barkley scored his first goal for Maurizio Sarri's unbeaten Chelsea to help them to a 3-0 win at Southampton.
Willian had a shot deflected on to the crossbar and Danny Ings missed a golden opportunity from close range at the other end, before Barkley created the opener for Eden Hazard.
The English midfielder pressed high to win back the ball and set up Hazard, the division's top scorer, who netted his seventh of the league season after 30 minutes at St. Mary's.
Barkley, who signed for Chelsea in January from Everton, bundled in the second with his knee from Olivier Giroud's acrobatic cross although TV replays suggested David Luiz had committed a foul in the build-up.
Hazard played in substitute Alvaro Morata to seal the win in stoppage time.
Maurizio Sarri says the third goal scored by Alvaro Morata is the sort of football he has been aiming for, with plenty of one-touch passing. He adds that it was another good all-round performance by the striker when he came on. #SOUCHE
— Chelsea FC (@ChelseaFC) October 7, 2018
Barkley's goal and assist completed a memorable few days for the midfielder, who has just been recalled to the national squad for the games against Croatia and Spain.
The 24-year-old impressed at the heart of Chelsea's midfield, linking well with Jorginho and Hazard as the home side completed their ninth win in 11 games across all competitions this season.
Although Southampton should have taken a first-half lead through Ings, who blasted over from just a few yards out, they struggled to match Chelsea's pace and precision.
Ings was lucky to stay on the pitch after a wild second-half challenge on Mateo Kovacic as Southampton, who had six players booked, resorted to increasingly physical methods.
RESULT
Southampton 0 Chelsea 3 (Hazard 30, Barkley 57, Morata 90+3)