Troy Deeney added Watford’s third following a mix-up between Trent Alexander-Arnold and Alisson
Watford scored three second-half goals to condemn runaway leaders Liverpool to a shock first league defeat of the season, while West Ham climbed out of the relegation zone with a first league win since 1 January.
Ismaila Sarr poked home Abdoulaye Doucoure’s cross to open the scoring at Vicarage Road, before doubling his tally with a dinked finish six minutes later.
Troy Deeney sealed a remarkable 3-0 win after capitalising on a mix-up between Liverpool defender Trent Alexander-Arnold and goalkeeper Alisson.
The result lifts Nigel Pearson’s side out of the bottom three on goal difference, while Jurgen Klopp’s team miss the chance to extend their lead over second-placed Manchester City to 25 points.
Jarrod Bowen scored on his first Premier League start as West Ham swept aside Southampton 3-1 at London Stadium.
Signed from Championship club Hull City in a £20m-plus deal in January, Bowen gave David Moyes’ strugglers the perfect start before Michael Obafemi’s equaliser.
But the Hammers climbed above Aston Villa, who play Man City in the Carabao Cup final on Sunday, and Bournemouth into 16th spot after goals by Sebastian Haller and Michail Antonio.
Villa, who have a game in hand, are two points from safety.
Chelsea‘s hopes of finishing in the top four were dented after being held at Bournemouth.
It was all going to plan for the fourth-placed Blueswhen Marcos Alonso, who netted the winner against Tottenham last week, put his side ahead atthe Vitality Stadium.
However, the Cherries hit back with two goals in the space of three minutes to take the lead.
Colombia midfielder Jefferson Lerma made it 1-1 before Joshua King’s first Premier League goal since 2 November looked to have earned Eddie Howe’s side a third successive Premier League home win.
In a thrilling game, Alonso’s third goal in two league games salvaged a point for Chelsea, who remain fourth – four points above fifth-placed Manchester United who play at Everton on Sunday (14:00 GMT).
Jordan Ayew’s goal ensured Brighton’s dismal start to 2020 continued as Crystal Palace secured a narrow 1-0 win at Amex Stadium.
The Ghana forward fired low under Mat Ryan after being set up by Christian Benteke.
The result leaves Palace nestled safely in mid-table, while the Seagulls sit three points above the bottom three and without a league win since 28 December with home matches against Arsenal, Manchester United, Liverpool and Manchester City on the horizon.
There were more yellow cards (7) than shots on target (5) as Burnley’s visit to Newcastle ended goalless.
The Clarets, ninth in the table, are unbeaten in their last six league games while they have secured clean sheets in four of the last five.