Reece James and Luke McCormick scored to give Chelsea a 2-0 win over 10-man Derby County at Stamford Bridge.
The win is Chelsea's first of the Division 1 season after a 0-0 draw at Manchester City last week.
After a goalless first-half, McCormick floated in a corner and James was on hand to score on 64 minutes.
Derby's evening was made more difficult when Calum MacDonald was shown his second yellow card.
Deep into stoppage time, McCormick sealed the win with a composed finish.
Chelsea are in PL2 action next Friday at home to Everton, while Derby host Sunderland.
See: Chelsea report | Derby report