Striker Kane scored the second goal in a 2-0 victory over the Hornets at Wembley to move Spurs closer to securing a top-four Premier League finish.
The 24-year-old was mocked by the FA Cup’s official Twitter feed last week following Manchester United’s semi-final win, something boss Mauricio Pochettino called “embarrassing”, and the England striker responded the only way he knows how by banging in his 27th league goal of the season.
Kane netted after the break, following Dele Alli’s first-half opener, to give on-looking England boss Gareth Southgate plenty to smile about.
The striker has also faced jokes at his expense after he claimed a goal, originally credited to Christian Eriksen, in a recent win at Stoke.
An ankle injury has also affected Kane in recent weeks but Pochettino believes he will be firing on all cylinders by the time the Three Lions begin their World Cup against Tunisia on June 18.
Asked if Kane could play himself back to 100 per cent before the tournament, Pochettino replied: “Yes of course.
“He’s a strong guy and physically and mentally. I am sure that, first of all, he will perform for us and no doubt he will arrive in very good condition for the World Cup.
“He needs to improve his performance still but I’m happy, 150 games, 105 goals, what more can we say, he is a fantastic striker.
“It wasn’t a great period for him in the last last few weeks, he’s human like anyone and a little bit affected but with the help of everyone he’s doing well.”
Spurs eased to victory but had to rely on Hugo Lloris to keep out Watford on a number of occasions.
The France international was praised by Pochettino after the win as Lloris’ display extended the Hornets’ woeful away form.
Javi Gracia took charge at Vicarage Road on January 21 and has yet to see his side score an away goal since his arrival.
Watford have now taken just two points from their last seven league games and, although highly unlikely, they could still be dragged into a battle for survival.
Gracia, however, is only looking up in the table and targeting the club’s best-ever Premier League finish.
They would need seven points to equal the 45 points achieved in 2015/16 but that is what the Spaniard is now aiming for with just three games remaining.
“If you ask me about the position in the table, my target is to improve and get the best position for this club we can. I prefer to be optimistic. The next game will be important for us,” he said.
Here, we rate the Whites…
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Hugo Lloris 6 – Made fantastic save to deny Andre Gray late in the first-half, displaying his alertness to come up trumps when called upon. Had little else to do.
Kieran Trippier 7 – Lack of pace meant it was a struggle against the trickery of Richarlison but did produce sublime delivery in second period for Kane to score.
Jan Vertonghen 7 – The Belgian dealt with the threat of the Hornets’ pacey attack with relative ease and is ending his best campaign yet in a Whites jersey strongly.
Davinson Sanchez 6 – Solid enough but needs to improve aerially as he becomes more accustomed to the physicality of English football.
Ben Davies 7 – Another consistent performance by arguably the Premier League’s left-back of the season.
Eric Dier 6 – Not a vintage display for the England international and needed to do more as the hosts struggled at times to gain a foothold in midfield.
Mousa Dembele 5 – Trudged off injured in the second-half, and with uncertainty surrounding his Spurs future, it could possibly of been his last appearance for the club.
Christian Eriksen 6 – The creative maestro claimed his 10th Premier League assist of the season with a nice cutback for Dele Alli. Always seems to have an impact on proceedings.
Dele Alli 7 – Showed great composure to open the scoring and once again seems to be growing in maturity, despite taking critics from all angles.
Son Heung-min 5 – Quiet game and struggled to get on the ball in dangerous areas in the final third. Lacked the usual energy we’re so used to seeing from the South Korean.
Harry Kane 7 – Scored deadly one-touch strike in second period and easily could have a hat-trick had he not miscued an effort following a brilliant Vertonghen free-kick, and then had strike ruled out for off-side.
Eric Lamela 5 – Subbed on for Alli late on but had little time to make an impact.
Victor Wanyama 5 – Picked up an unjust yellow card moments after entering the fray for the injured Dembele. Other than that, largely non-existent.
Moussa Sissoko 5 – Came on for Son for some fresh legs in midfield.