Tottenham manager Jose Mourinho: "With a few draws of people in the same area of the table as us, it was very important to get three points. We still have an eye on fourth. It was a match where you know the quality of the opponent.
"We are in a situation when I have to think, think, think," said Mourinho.
"I look to bench and we don't have attacking players. I had to take off Erik Lamela because of fatigue but we showed an incredible reaction to score a second goal.
But Mourinho told BT Sport afterwards: "I think we deserved to win this match. To lose would have been too harsh on the boys."
Watford goalkeeper Ben Foster saved from Lucas Moura before half-time to thwart Spurs, who have now gone four league games without a win.
Tottenham boss Jose Mourinho, speaking to BBC Sport: "This is football. Sometimes you get more than you deserve. Sometimes you get less. This was an occasion when we got nothing when we deserved something.
Tottenham boss Jose Mourinho: "Today was bad, we didn't start well. Chelsea started better than us. They scored from a short corner and that disappoints me. We were not focused.
"The second goal is a bad goal to concede.
Tottenham manager Jose Mourinho: "We knew the game was going to be difficult. They didn't catch us by surprise. We had a very good start like we tried to. We almost scored a second goal but against Wolves that would not have killed the game.
"I think it is the best goal in my life," Son, 27, said.
"I don't know what happened until the end! When I got the ball l tried to pass to Dele Alli and waited for his movement.
"But I couldn't find him so I just went and went.
"For me Dele is not a midfield player, he is a player to play like he is playing, close to Harry. I think this is the best position for him," added Mourinho.
"He's the best thing that can happen to a coach because everybody speaks about him, you [media], the fans speak about him for the right reasons.
Tottenham manager Jose Mourinho says he would "hate" anybody to say he had made an impact after their 3-2 victory at West Ham in his first game in charge.
"It's not about me, it's about the players and club.
"The most difficult thing for us was to match their energy," said Pochettino. "In the second half we were much better and matched them. I think they deserve one point.
"The reality is that, for different reasons, we are not showing the performances that we expect.
Gomes, 26, was tackled from behind by Son and appeared to be injured by an awkward fall which prompted an anguished reaction from players and fans close to the incident.
Former Everton winger Pat Nevin, who was the analyst for BBC Radio 5 Live at Goodison Park on Sunday, described the incident as "horrible".