Son Heung-min has scored six goals in 10 Premier League appearances against WatfordSon Heung-min marked his 200th Premier League appearance with the winning goal as Tottenham maintained their 100% start to the season against Watford.
The result means Spurs will top the table heading into September's international break, while Watford are 12th.
It also sees Nuno Espirito Santo become just the second Tottenham boss to win his first three league games in charge of the club, with the last man to accomplish that feat being Arthur Rowe in 1949.
But they were made to work hard for their victory by an accomplished Watford side who were unfortunate to concede when Son's inswinging free-kick deceived goalkeeper Daniel Bachmann and found the bottom-right corner.
While Harry Kane was unusually quiet on his first top-flight start for Tottenham, Steven Bergwijn, Eric Dier and Dele Alli all had chances for the hosts.
However, Xisco Munoz's side offered plenty of attacking threat of their own.
Juraj Kucka twice failed to capitalise on good opportunities to score and Emmanuel Dennis also gave Spurs some uncomfortable moments.
More to follow.
helpHow to play
Rate players out of 10 throughout or after the game. The rater will close 30 minutes after the final whistle.
Rating range key1 = Give it up10 = Pure perfection
Line-ups
Tottenham
Formation 4-2-3-1
1Lloris
25Tanganga6D Sánchez15Dier3Reguilón
5Højbjerg29Skipp
7Son Heung-Min20Alli23Bergwijn
10Kane
1Lloris25Tanganga6D Sánchez15Dier3Reguilón5Højbjerg29SkippBooked at 85mins7Son Heung-MinSubstituted forGilat 88'minutes20AlliBooked at 61mins23BergwijnSubstituted forLucas Mouraat 68'minutes10KaneBooked at 45minsSubstitutes
2Doherty4Romero8Winks11Gil18Lo Celso19R Sessegnon22Gollini27Lucas Moura33DaviesWatford
Formation 4-1-4-1
26Bachmann
15Cathcart5Troost-Ekong31Sierralta11Masina
4Etebo
23Sarr19Sissoko33Kucka25Dennis
7King
26Bachmann15CathcartSubstituted forNgakiaat 51'minutes5Troost-Ekong31Sierralta11Masina4EteboBooked at 29mins23Sarr19SissokoBooked at 54minsSubstituted forCleverleyat 71'minutes33Kucka25DennisBooked at 90mins7KingSubstituted forHernández Suárezat 65'minutesSubstitutes
2Ngakia3Rose6Louza8Cleverley12Sema17Fletcher27Kabasele29Hernández Suárez35ElliotReferee:Andre MarrinerAttendance:57,672Live Text
Match ends, Tottenham Hotspur 1, Watford 0.
Second Half ends, Tottenham Hotspur 1, Watford 0.
Emmanuel Dennis (Watford) is shown the yellow card for a bad foul.
Lucas Moura (Tottenham Hotspur) wins a free kick in the defensive half.
Foul by Emmanuel Dennis (Watford).
Corner, Tottenham Hotspur. Conceded by Cucho Hernández.
Corner, Tottenham Hotspur. Conceded by Francisco Sierralta.
Offside, Watford. Peter Etebo tries a through ball, but Ismaila Sarr is caught offside.
Hugo Lloris (Tottenham Hotspur) wins a free kick in the defensive half.
Foul by Tom Cleverley (Watford).
Offside, Tottenham Hotspur. Lucas Moura tries a through ball, but Harry Kane is caught offside.
Substitution, Tottenham Hotspur. Bryan Gil replaces Son Heung-Min.
Davinson Sánchez (Tottenham Hotspur) wins a free kick in the defensive half.
Foul by Emmanuel Dennis (Watford).
Oliver Skipp (Tottenham Hotspur) is shown the yellow card for a bad foul.
Foul by Oliver Skipp (Tottenham Hotspur).
Ismaila Sarr (Watford) wins a free kick in the attacking half.
Attempt saved. Harry Kane (Tottenham Hotspur) right footed shot from the centre of the box is saved in the top centre of the goal. Assisted by Japhet Tanganga.
Corner, Tottenham Hotspur. Conceded by William Troost-Ekong.
Davinson Sánchez (Tottenham Hotspur) wins a free kick in the defensive half.
Our coverage of your Premier League club is bigger and better than ever before - here's everything you need to know to make sure you never miss a moment
