And the 22-year-old attacker who made a cameo in the encounter has lauded their blistering run. Tottenham's start has still been a strong one with nine points out of 12, but they will go into the global break furious that they threw this one away.
Watford will be hoping to continue with in such vein of form when they clash with Manchester United on September 15.
Watford had not beaten Tottenham in any competition since October 4, 1994 - a run of 13 games.
Watford have also enjoyed an excellent start to the season as Javi Garcia's men sit level with Tottenham on nine points having won their opening three matches against Brighton, Burnley and Crystal Palace so someone's ideal record has to go tomorrow.
Spurs came crashing back down to earth today as they slipped to a disappointing 2-1 defeat to in form Watford at Vicarage Road.
The result means his side have lost early ground to their main rivals and the way his side was overpowered during the final half hour was alarming.
Moussa Sissoko is also out with a hamstring problem while Erik Lamela will be handed a late fitness test after picking up a hamstring complaint in the warm-up ahead of the United game.
Defeat, though, highlighted Tottenham's lack of cutting edge, with Lucas Moura the only player to consistently threaten, while the manner in which they conceded was cause for concern.
As I witness a glorious sunrise here in Salford, it signifies a new week for our Premier League teams - and a time to reflect on just what went on at the weekend. The surprising hosts have gotten off to a hot start on the season, conceding just two goals in three matches, just as the Spurs have done.
Spurs had won their opening three Premier League outings before they played the Hornets yesterday, and looked like making it four wins out of four after they took the lead in the 53rd minute at Vicarage Road.
- Troy Deeney became the fourth player to score in 100 matches for Watford in all competitions, after Tommy Barnett, Ross Jenkins and Luther Blissett.
"We are happy we won and kept the points in our stadium".
Lacazette sealed victory for Arsenal in the 81st minute when he was allowed to turn in the box by Sol Bamba before firing into the top corner from a tight angle.