Pochettino was left exasperated with his side's defending and is demanding a significant improvement when they return from the two-week global break.
After a tepid first half, Tottenham were gifted the lead when Abdoulaye Doucoure scored an own goal in the 53rd minute, deflecting the ball in with his chest.
"It is so painful to concede two goals like this", Pochettino said.
Chelsea's Eden Hazard believes that the Blues will be rivalling the likes of Manchester City and Liverpool for the Premier League title. I think in a couple of weeks we are playing Liverpool [at Stamford Bridge], a massive game.
Tottenham's start has still been a strong one with nine points out of 12, but they will go into the worldwide break furious that they threw this one away.
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 flawless record has to go tomorrow. 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.
Apple set to unveil new iPhone models on September 12
The new Apple Watch models will include larger screens that cover almost the entire front of the watch. According to the publication, the company will introduce three new iPhone and the updated Apple Watch.
"The second half we scored and then they showed more strength (and were) more aggressive in the situation".
"The reality is we need to analyse who is in the pitch".
"We need to show more respect to this competition".
"With Watford, I always worry they will have that dip and look like a team cascading towards relegation - but I like the manager".
With Son Heung-min returning from representing South Korea at the Asian Games and Erik Lamela missing with a hamstring injury, Pochettino only had one attacking player on his bench in Fernando Llorente.
Points won in September and October count just the same as points won in March and April, but these are the advantageous positions - and predicaments - in which the 17 teams still realistically chasing a postseason berth now find themselves... "That is good for us and four wins in a row, I am not sure it has ever happened here", Holebas said. "It is really good I have to say from us and we showed character today and that is good for us". Today, it's not that we didn't win because of the players on the bench or the squad.