Diego Costa scored the winner for the second game in a row as Chelsea came from behind to beat Watford at Vicarage Road.
Etienne Capoue had put the Hornets ahead on 56 minutes as the hosts looked in control of the game.
But substitute Michy Batshuayi equalized with his first goal for Chelsea since his £33m move.
Then Costa ran on to substitute Cesc Fabregas' pass and slid the ball under Heurelho Gomes with three minutes left.
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