The strikes were Sarr's fourth and fifth league goals of the season
Liverpool's hopes of remaining unbeaten for an entire Premier League season were ended in sensational style by a rampant Watford at Vicarage Road.
Jurgen Klopp's side were chasing a record-breaking 19th straight league win but were well below par and only registered one shot on target.
Watford, who started the game with only Norwich below them in the table, created the better chances and finally took the lead their play deserved nine minutes into the second half when Ismaila Sarr poked home Abdoulaye Doucoure's cross from the left.
On the hour mark, Watford's record-signing made it two when he raced clear and superbly dinked the ball over Alisson.
The Senegal international then turned provider when he intercepted Trent Alexander-Arnold's back pass and laid back for Troy Deeney to guide the ball into the net.
It was the second time in a week that Liverpool have gone behind and had their invincible league season put under threat, but unlike against West Ham on Monday they could not turn it around.
Victory for Watford sees them climb out of the bottom three on goal difference, going above Bournemouth, who had earlier drawn 2-2 with Chelsea.
More to follow.
- Reaction to Liverpool's defeat
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Line-ups
Match Stats
Live Text
Line-ups
Watford
26Foster
21Femenía
27Kabasele
15Cathcart
11Masina
19Hughes
29Capoue
23SarrSubstituted forPussettoat 82'minutes
16DoucouréSubstituted forChalobahat 89'minutes
7DeulofeuSubstituted forPereyraat 37'minutes
9Deeney
Substitutes
1Gomes
4Dawson
10Welbeck
14Chalobah
18Gray
33Pussetto
37Pereyra
Liverpool
1Alisson
66Alexander-Arnold
6Lovren
4van Dijk
26Robertson
15Oxlade-ChamberlainSubstituted forOrigiat 65'minutes
3Fabinho
5WijnaldumSubstituted forLallanaat 61'minutes
11Salah
9FirminoSubstituted forMinaminoat 79'minutes
10Mané
Substitutes
13Adrián
18Minamino
20Lallana
27Origi
32Matip
48Jones
51Hoever
Referee:
Michael Oliver
Attendance:
21,634
Match Stats
Home TeamWatfordAway TeamLiverpool
Possession
Home29%
Away71%
Shots
Home14
Away7
Shots on Target
Home5
Away1
Corners
Home3
Away5
Fouls
Home4
Away8
Live Text
Posted at
Match ends, Watford 3, Liverpool 0.
Full TimePosted at 90'+4'
Second Half ends, Watford 3, Liverpool 0.
SubstitutionPosted at 89'
Substitution, Watford. Nathaniel Chalobah replaces Abdoulaye Doucouré.
Posted at 89'
Attempt missed. Virgil van Dijk (Liverpool) right footed shot from outside the box is too high. Assisted by Divock Origi.
Posted at 84'
Attempt blocked. Adam Lallana (Liverpool) right footed shot from outside the box is blocked. Assisted by Andrew Robertson.
SubstitutionPosted at 82'
Substitution, Watford. Ignacio Pussetto replaces Ismaila Sarr.
Posted at 82'
Attempt missed. Ismaila Sarr (Watford) right footed shot from the centre of the box is close, but misses to the right. Assisted by Etienne Capoue with a through ball.
SubstitutionPosted at 79'
Substitution, Liverpool. Takumi Minamino replaces Roberto Firmino.
Goal!Posted at 72'
Goal! Watford 3, Liverpool 0. Troy Deeney (Watford) right footed shot from the left side of the box to the high centre of the goal. Assisted by Ismaila Sarr.
Posted at 72'
Foul by Roberto Firmino (Liverpool).
Posted at 72'
Etienne Capoue (Watford) wins a free kick in the defensive half.
Posted at 68'
Sadio Mané (Liverpool) wins a free kick on the right wing.
Posted at 68'
Foul by Abdoulaye Doucouré (Watford).
Posted at 68'
Attempt missed. Ismaila Sarr (Watford) right footed shot from the right side of the box is close, but misses to the right. Assisted by Adam Masina with a cross.
Posted at 66'
Adam Lallana (Liverpool) hits the right post with a left footed shot from outside the box.
SubstitutionPosted at 65'
Substitution, Liverpool. Divock Origi replaces Alex Oxlade-Chamberlain.
Posted at 65'
Corner, Liverpool. Conceded by Kiko Femenía.
Posted at 64'
Attempt blocked. Will Hughes (Watford) right footed shot from the centre of the box is blocked.
Posted at 62'
Attempt missed. Trent Alexander-Arnold (Liverpool) right footed shot from long range on the left misses to the left from a direct free kick.
Posted at 62'
Sadio Mané (Liverpool) wins a free kick on the left wing.
Posted at 62'
Foul by Kiko Femenía (Watford).
SubstitutionPosted at 61'
Substitution, Liverpool. Adam Lallana replaces Georginio Wijnaldum.
Goal!Posted at 60'
Goal! Watford 2, Liverpool 0. Ismaila Sarr (Watford) right footed shot from the right side of the box to the centre of the goal. Assisted by Troy Deeney.
Posted at 58'
Corner, Liverpool. Conceded by Craig Cathcart.
Posted at 56'
Offside, Watford. Will Hughes tries a through ball, but Troy Deeney is caught offside.
Posted at 56'
Foul by Dejan Lovren (Liverpool).
Posted at 56'
Troy Deeney (Watford) wins a free kick in the attacking half.
Posted at 55'
Foul by Fabinho (Liverpool).
Posted at 55'
Ismaila Sarr (Watford) wins a free kick in the defensive half.
Goal!Posted at 54'
Goal! Watford 1, Liverpool 0. Ismaila Sarr (Watford) right footed shot from very close range to the centre of the goal. Assisted by Abdoulaye Doucouré.
Posted at 52'
Attempt saved. Andrew Robertson (Liverpool) left footed shot from the left side of the box is saved in the bottom left corner. Assisted by Virgil van Dijk.
Posted at 52'
Offside, Watford. Ben Foster tries a through ball, but Troy Deeney is caught offside.
Posted at 49'
Attempt blocked. Mohamed Salah (Liverpool) left footed shot from outside the box is blocked. Assisted by Alex Oxlade-Chamberlain.
Posted at 46'
Corner, Watford. Conceded by Alisson.
Posted at 46'
Attempt saved. Ismaila Sarr (Watford) left footed shot from outside the box is saved in the top centre of the goal. Assisted by Roberto Pereyra.
Second HalfPosted at
Second Half begins Watford 0, Liverpool 0.
Half TimePosted at 45'+6'
First Half ends, Watford 0, Liverpool 0.
Posted at 45'+5'
Attempt missed. Troy Deeney (Watford) right footed shot from the centre of the box is close, but misses to the right.
Posted at 45'+5'
Attempt saved. Troy Deeney (Watford) right footed shot from the centre of the box is saved in the centre of the goal.
Posted at 45'+4'
Foul by Dejan Lovren (Liverpool).
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goal
Source: bbc.com