Antonio Conte has admitted he made a mistake with his starting line-up in Chelsea's 4-1 loss to Watford.
The Hornets scored three goals in the dying moments of the game to defeat a ten-man Blues outfit.
Speaking after the match, Conte told Sky Sports:"I tried to warn everyone about the difficulty of our path in the league and Champions League.
"We performed very bad but maybe I made the mistakes with the starting XI today.
"My choice was very poor I think. It was very difficult to change something tonight."