Three days after losing the north London derby, Tottenham fans were back taunting their arch-rivals again.

“Are you watching, Arsenal?” came the chant from the away end after Heung-Min Son smashed in Tuesday's winner to maintain his incredible scoring record against Borussia Dortmund.

But much more importantly, it means Spurs are guaranteed to top Group H above both Real Madrid and Dortmund, the two European super-powers who left a few Spurs fans fearing another season in the Europa League when the draw was made.

It is a remarkable achievement from Mauricio Pochettino’s men and no wonder the supporters feel like crowing about it as they are on Europe’s top stage while their neighbours are stuck with Thursday night football.

Spurs trailed at halftime but Harry Kane fired them level... (
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Getty)
...scoring after good work by Danny Rose and Dele Alli (
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Reuters)

Harry Kane scored his first goal in a month - mind you, he still has 17 goals in his last 16 games for club and country and an incredible 39 in 38 for Tottenham in 2017 - and just as important was Dele Alli’s return to form.

Alli provided both assists, first for Kane and then Son who has now scored eight goals in eight games against Dortmund for his former clubs Hamburg, Bayer Leverkusen and now Spurs.

Midfielder Alli has been really struggling for form and confidence - bar his brilliant man of the match display against Madrid - but this was a return to his best.

Son won it, via another Alli assist, with 13 minutes to play... (
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Getty)
...ensuring Spurs will play a group runner-up in the last 16 after Christmas (
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Getty)

Even when he has a quiet 45 minutes as he did in the first half, you ignore Alli at your peril as he can make things happen out of nothing.

This was a big win for Tottenham as they stuffed Dortmund at Wembley, did the same to Madrid and can now rest a few players for the final group match at home to APOEL in a fortnight.

They are guaranteed first place on the head-to-head after taking four points against Madrid.

Spurs started rather sluggishly, maybe a few hangovers from losing at Arsenal on Saturday, and it was Dortmund who went ahead.

Andriy Yarmolenko’s wonderful back heel put in Pierre-Emerick Aubameyang and the striker buried a low shot past Lloris.

Aubameyang had been suspended by Dortmund after turning up late for training but under-pressure boss Peter Bosz turned to him in an emergency and it looked as if it would pay off.

But Dortmund going ahead finally woke Tottenham up and they could easily have been level before half time.

Rose’s low cross found Eriksen and his fierce shot forced a terrific reflex save from Dortmund keeper Roman Burki after 40 minutes. Two minutes later, Eriksen’s corner picked out Eric Dier at the near post and his header was brilliantly saved by Burki.

But Tottenham came out after the break with the bit between their teeth.

Pochettino pushed Alli further forward and the tactical switch paid dividends.

Danny Rose won the ball on the left, found Alli and his pass set up Kane who scored such a typical Kane goal after 49 minutes.

Kane took his shot early, squeezed a low shot inside Burki’s near post and the keeper who looked suspect at Wembley was at fault again.

Then, after 76 minutes with the clock running down, Alli did a little dance in the penalty box, took two defenders with him, then found Son who lashed the ball into the top corner.

That was job done.

A gritty win after going behind — a huge statement which left those fans also chanting, “We are top of the league” at the end.

And no wonder. They had good reason to celebrate.

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