Chelsea fullback Reece James insists defeat to Aston Villa will prove to be a blip.
Chelsea were stunned 2-0 at home on Saturday night.
"We had the chances to get a goal but we didn't take our chances and we got punished," James observed.
"It is very tough but we are working hard. It is just the small details that are not clicking at the moment and we have to go back to the drawing board and try to change this.'
Asked about Ben Chilwell having a goal disallowed for a push, James also told the club's website: "When a team go 1-0 up and they are away from home, of course they are going to try to get every foul and decision going their way. Personally, I thought it was harsh but the referee is the referee."