Mauricio Pochettino was proud of Tottenham's mature performance in grinding out a 2-1 victory over Watford on Monday that sent his side third in the Premier League.
Son Heung-min's 89th-minute strike earned Spurs the win against Quique Sanchez Flores' team, who played the latter stages with 10 men after Nathan Ake was shown a red card for a high challenge on Erik Lamela.
Given Watford went into the meeting at Vicarage Road unbeaten in five games, including a 3-0 win over Liverpool and a 2-2 draw at Chelsea, Pochettino was delighted to have departed with all three points.
"I don't know if it was the most important victory [of the season] but it's true it was a fantastic victory because a few weeks ago Liverpool lost 3-0 here," said the Tottenham boss.
"We managed the game on a very difficult pitch and with the way we play it was difficult. It wasn't easy.
"But the maturity we showed - how we fought and our reaction - we should be proud of."
Tottenham's seamless adaptation impressed Pochettino, but he was disappointed the 21-year-old allowed Odion Ighalo past him to cancel out Lamela's opener before half-time.
"Normally we play with Eric as a holding midfielder but because they play with the long ball, I think it was a very good solution," Pochettino continued.
"The only disappointing thing was the way we conceded because at 1-0 up at half-time, I think we could have killed game."
"We don't know, we need to wait and assess him. We hope it's not a big issue, maybe one week or two weeks," he added.
