Graham Potter has been at the wheel at Chelsea since September, taking charge of 25 games.
In his last 20 games, he has won just five, beating Palace, Villa, Bournemouth, Salzburg and Dinamo Zagreb.
He's lost to Dortmund, West Ham, Fulham, City (three times), Newcastle, Arsenal and now Southampton.
5 wins, 6 draws, 9 defeats: the 47-year-old has won just 21 points out of possible 60 (including cup games).
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