Substitute Marcel Lavinier scored a late goal as Chelsea battled to a 1-0 win at Derby County in Premier League 2 Division 1.
Chelsea started brightly at Pride Park and thought they had taken the lead on six minutes, but Tino Anjorin had his effort ruled out after Charlie Brown was adjudged to be offside.
In the second half Anjorin came close when his low effort was turned around the post by goalkeeper Henrich Ravas.
On 85 minutes, Chelsea made the breakthrough. A cross from Ian Maatsen was met by Clinton Mola and although Ravas kept it out, he could not prevent 18-year-old Lavinier from converting the follow-up.
Derby: 19 August v Southampton (A)
Chelsea: 19 August v Liverpool (H)