Ross Barkley's late header ensured Chelsea finished the campaign with a narrow victory against already relegated Watford at Stamford Bridge.
Barkley nodded Reece James' cross past Hornets goalkeeper Daniel Bachmann to earn the Blues all three points - four minutes after Dan Gosling had grabbed a late equaliser for the Hornets.
Kai Havertz converted a low cross from Kenedy - who was making his first Premier League start for the club since May 2017 - to give the Blues the lead early in the first half.
Gosling's header from Adam Masina's delivery appeared to have earned Watford a share of the spoils, but Barkley scored with virtually the last moment of action to deny Roy Hodgson's team.
Antonio Rudiger, making his final appearance for the hosts, was given a warm ovation by Chelsea supporters when he was replaced by Barkley midway through the second half.
The Hornets end the season in 19th place after bottom club Norwich's 5-0 defeat at home to Tottenham Hotspur
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