Match ends, Watford 1, Tottenham Hotspur 1.
Tottenham manager Mauricio Pochettino says his side will learn from "suffering things against us" after Spurs drew against Watford.
Spurs played most of the second half with 10 men after defender Davinson Sanchez was dismissed for elbowing Richarlison in the 52nd minute.
But they battled to secure an away point and moved up to sixth in the Premier League.
The hosts had taken the lead in the 13th minute when Christian Kabasele headed in from six yards from Tom Cleverley's left-wing corner.
Watford thought they should have had a penalty when Richarlison appeared to be fouled, but it was not given, and less than a minute later Tottenham's Son Heung-min finished off Christian Eriksen's cross to equalise.
After Sanchez's red card, Abdoulaye Doucoure hit the post for the hosts with a 25-yard strike but Watford could not find a winning goal.
- Relive Watford's game with Tottenham as it happened
- Reaction and analysis from Saturday's Premier League matches
"We're in a period now that we are suffering things against us," said Pochettino. "It is good for the group to try and learn. It is a long-term project. It will be good for the future. You want to win but in tough moments you learn.
"I think it wasn't intentional for Davinson to do what he did. I am not going to talk about the refereeing decision any more.
"For me one of the first questions is about a controversial situation. My decision is not going to change it."
This was Tottenham's fourth Premier League match without a victory, although they do climb above Burnley, who lost 1-0 at Leicester, while Watford remain eighth.
Referee Atkinson makes the headlines again
Both managers might have felt hard done by as a thrilling encounter was marked by controversial incidents.
Watford will feel aggrieved that Tottenham were given the chance to equalise in the first half after Richarlison looked to have been blocked off in the Spurs penalty area by Ben Davies.
However, referee Martin Atkinson, who caused controversy on Wednesday by failing to send off Liverpool goalkeeper Simon Mignolet for what looked to be a professional foul on Stoke's Mame Biram Diouf, waved play on.
Tottenham quickly countered down the right through Kieran Trippier, who was repeatedly allowed to advance with the ball, and he released Eriksen, who slid in a low pass which Son tucked away from close range.
Sanchez was dismissed seven minutes into the second half when the defender caught Richarlison with his elbow.
In a fiery encounter, Tottenham's Harry Kane and Dele Alli were both on the receiving end of some tough challenges throughout the match, with four Watford players getting cautioned.
Watford show their fighting spirit
For Watford, it is another impressive result in what has been a superb season so far since Marco Silva took over in the summer.
The Hornets finished one place above the relegation zone in 2016-17 under Walter Mazzarri, but Silva, appointed manager in May, has helped transform the side into a hard-to-beat, physical, but talented team.
This result is the third time this season that Watford have not lost against a top-six side, after also drawing 3-3 with Liverpool in August and beating Arsenal 2-1 in October.
Silva, who was wanted as Everton boss before the Toffees appointed Sam Allardyce earlier this week, watched his team take the lead when Kabasele outjumped Kane to head the hosts in front.
After Son's equaliser and Sanchez's dismissal, Watford came closest to taking the three points but Doucoure's excellent 25-yard strike bounced off the inside of the post and away to safety.
Watford also could have had a late penalty when the ball appeared to hit the arm of Tottenham's Eric Dier, but Atkinson was not interested.
Man of the match - Abdoulaye Doucoure (Watford)
Kabasele a threat from corners - the stats
- Watford have never beaten Tottenham in the Premier League (drawn three, lost six).
- Spurs have now kept just one clean sheet in their past seven Premier League games, after registering four shut-outs in the five games before that.
- Christian Eriksen provided his first Premier League assist since the opening weekend against Newcastle, ending a run of 13 appearances without one.
- Son Heung-Min has scored four and assisted two more in his last seven starts in all competitions for Tottenham.
- Christian Kabasele has scored two goals in 14 Premier League games this season, equalling his tally from last season in 16 appearances. All four of his goals in the competition have come from corner situations.
- Tottenham players have been shown two red cards in their last 10 Premier League games, as many as in their previous 111.
'You can't just turn up in the big games' - analysis
Alan Shearer, Match of the Day pundit
I didn't think the referee (Martin Atkinson) was decent at all. I don't think it was a penalty on Richarlison, but the referee gave a red card (to Davinson Sanchez), which I think is slightly harsh. Sanchez has not thrown his elbow out.
It is alright playing in the glory games against Real Madrid, but in the Premier League, Tottenham are starting so slowly.
They are missing Toby Alderweireld but that is not an excuse for the way they are starting. I thought Dele Alli was poor, sloppy.
From a Spurs point of view you just can't turn up in the big games, you have to turn up against the smaller teams and that is why Tottenham will not win the league.
'I want everybody with their feet on the floor' - what they said
Watford manager Marco Silva told BBC Sport: "We did everything to win, like Tottenham, and it was a tough game for both teams.
"It was 1-1 at half-time and a rough game in the second half. We know against Tottenham we can lose our balance in a counter-attack, but against 10 we tried everything and had chances to score.
"In some moments in the last decision we need to do better. In the last cross and the last decision, it is not the best.
"We need to keep going and nothing changes. In the last game against Manchester United [which Watford lost 4-2] we did our best and the players again showed good commitment and attitude. This is our way.
"Everybody knows what our hope is - to remain a club in the Premier League. We have started well and everybody is enjoying it, but I want everybody with their feet on the floor. This game showed me we need to improve a lot and continue working hard."
Tottenham manager Mauricio Pochettino told BBC Sport: "We deserved more. In the second half we played more than 40 minutes with one less and the team was brave and tried to win the game.
"I am happy. In the last few weeks we have been frustrated but the face the team showed today was good. Sometimes you need to feel that frustration and learn.
"It is so difficult to play with one less. The good thing is we did not concede and we were also close to scoring. We handled the game well during the second half and I was happy with the performance."
For Watford, they play next on Saturday, 9 December with a trip to Burnley (15:00 GMT), before an away game at Crystal Palace on Tuesday, 12 December (20:00 GMT).
Tottenham have three home games in a row, starting on Wednesday (19:45 GMT) in the Champions League against Cypriot side Apoel Nicosia, although Spurs have already secured top spot in Group H and a place in the last 16. After that, Pochettino's side have Premier League games against Stoke on Saturday, 9 December (15:00 GMT) and Brighton on Wednesday, 13 December (20:00 GMT).
- 27KabaseleBooked at 50minsSubstituted forCapoueat 64'minutes
- 8CleverleyBooked at 36minsSubstituted forGrayat 88'minutes
- 22ZeegelaarBooked at 73mins
- 37PereyraSubstituted forCarrilloat 67'minutes
- 11RicharlisonBooked at 88mins
- 6D SánchezBooked at 52mins
- 5VertonghenBooked at 71mins
- 23EriksenSubstituted forSissokoat 64'minutes
- 20AlliSubstituted forWinksat 86'minutes
- 7Son Heung-MinSubstituted forLamelaat 77'minutes
- Martin Atkinson
- Shots on Target
Second Half ends, Watford 1, Tottenham Hotspur 1.
Corner, Watford. Conceded by Erik Lamela.
Kieran Trippier (Tottenham Hotspur) wins a free kick on the right wing.
Foul by Marvin Zeegelaar (Watford).
Richarlison (Watford) is shown the yellow card.
Mousa Dembélé (Tottenham Hotspur) wins a free kick in the defensive half.
Foul by Etienne Capoue (Watford).
Substitution, Watford. Andre Gray replaces Tom Cleverley.
Foul by Mousa Dembélé (Tottenham Hotspur).
Etienne Capoue (Watford) wins a free kick in the defensive half.
Substitution, Tottenham Hotspur. Harry Winks replaces Dele Alli.
Dele Alli (Tottenham Hotspur) wins a free kick in the attacking half.
Foul by Tom Cleverley (Watford).
Corner, Watford. Conceded by Eric Dier.
Attempt saved. Etienne Capoue (Watford) left footed shot from outside the box is saved in the centre of the goal. Assisted by Tom Cleverley.
Foul by Erik Lamela (Tottenham Hotspur).
Troy Deeney (Watford) wins a free kick in the defensive half.
Substitution, Tottenham Hotspur. Erik Lamela replaces Son Heung-Min.
Offside, Tottenham Hotspur. Eric Dier tries a through ball, but Moussa Sissoko is caught offside.