A frustrated Thomas Tuchel criticised his players consistency and focus after Chelsea lost 2-1 to Southampton on Tuesday evening.
The Blues suffered their second Premier League defeat of the season at St Mary's thanks to first-half goals from Romeo Lavia and Adam Armstrong. The visitors did take the lead, with Raheem Sterling scoring his third goal since his move from Manchester City.
The result leaves Chelsea in eighth, five points behind leaders Arsenal having played a game more. Worryingly for Tuchel, City and Tottenham can move six points clear of them with wins against Nottingham Forest and West Ham respectively on Wednesday.