Mauricio Pochettino knew the importance of this game. In Champions League Group H, this was Tottenham's cup final.
And they won it – and, fittingly, at Wembley, too. If all goes as expected from here, Pochettino will have worked out that a draw in Dortmund on matchday five should as good as see Tottenham home.
Here's how Mystic Mauricio sees is unfolding. Real Madrid win the group – maybe six victories in six, or thereabouts. Apoel Nicosia are the chumps, played six, lost six in all likelihood. This leaves Tottenham and Borussia Dortmund duking it out for the second qualifying place. So a win in the home leg between the teams was essential.
Tottenham striker Harry Kane celebrates restoring his side's lead in the first half after beating Roman Burki at his near post
Kane shook off two defenders before cutting inside to find the net from a relatively tight angle but the keeper was at fault
Heung-Min Son slides across the Wembley surface after providing Spurs with the best possible start with a near post finish
Tottenham took full advantage of their slice of good fortune as Kane doubled his tally for the night with a precise finish
The 24-year-old striker's low shot to a slight deflection off the leg of Lukasz Piszczek on its way into the bottom corner
Son and Kane did the damage in Dele Alli's absence as Tottenham lifted their Wembley curse with a fine win on Wednesday
TOTTENHAM (3-4-3): Lloris, Aurier, Alderweireld, Sanchez, Vertonghen, Davies, Son (Sissoko 83), Dembele, Dier, Eriksen, Kane (Llorente 87)
SUBS NOT USED: Vorm, Trippier, Winks, Foyth, Walker-Peters
GOALS: Son 4, Kane 15, 60
BOOKED: Dier, Vertonghen
SENT OFF: Vertonghen
SUBS NOT USED: Weidenfeller, Subotic, Isak, Philipp
GOAL: Yarmolenko 11
BOOKED: Toljan, Castro
REFEREE: Gianluca Rocchi (Italy)
And Tottenham did it. Against a weakened Dortmund side – and, yes, Tottenham were without Dele Alli, but the Germans absentees ran close to double figures – and with a helping of good fortune via an unjustly disallowed goal, but they could do with a break here.
For those that believe in fortune – and Wembley has made Tottenham fans increasingly suspicious of jinxes – could this be the corner turned.
Of course, with a two goals margin of victory, one disallowed goal does not alter the outcome – but its timing might.
No sooner were Dortmund wrongly penalised when Tottenham went up the other end and scored their third. Games turn on the tiniest margins. This was rather a large one, all things considered.
When Pierre Emerick Aubameyang swept Mahmoud Dahoud's cross into the net on 57 minutes, Tottenham led 2-1. That should have been the equaliser. Instead it was extinguished by an erroneous linesman's flag.
There were Dortmund players offside, but none that touched the ball. Aubameyang, meanwhile, had timed his run perfectly from an onside position. The stooge official on the byline did nothing, either. Another triumph for the ideas factory that was Michel Platini.
Dortmund were still smarting, then, when Tottenham put clear air into the game. A lovely interchange of passes ended with Christian Eriksen feeding Harry Kane and his shot went through the legs of defender Lukasz Piszczek and past deeply underwhelming goalkeeper Roman Burki, of Switzerland.
Heung-Min Son latched onto Harry Kane's through-ball after just four minutes to give Tottenham the best possible start
South Korea striker Heung-Min Son has now scored seven goals in nine competitive games against Borussia Dortmund
Tottenham celebrate their opening strike against the current Bundesliga leaders in the opening Champions League game
Andriy Yarmolenko bent in Dortmund's equaliser after a sharp interchange with Shinji Kagawa before beating Hugo Lloris
The Ukrainian forward celebrates his brilliant strike to bring the German side level after just 11 minutes at the home of football
The former Dynamo Kiev winger showed the quality of his left foot leaving Lloris with no chance from his long-range strike
Tottenham manager Mauricio Pochettino instructs from the touchline during the opening Champions League group game
He seemed to have a very neutral attitude to saving them, certainly when judged by his first-half display. So Tottenham got lucky in that aspect, but there were good for their three points.
In the space of two second-half minutes, Kane and Hueng-Min Son spurned excellent chances to broaden the lead, and Ben Davies forced a rare stop from Burki after 68 minutes. Dortmund simply seemed to run out of puff and, after Hugo Lloris saved with his legs on 60 minutes, Tottenham assumed command.
Taking nothing away from Spurs, it is hard to imagine there has been a better time to play Borussia Dortmund in Europe these last few years.
A list of the injured was almost a team sheet in itself: Marco Reus, Andrew Schurrle, Julian Weigl, Erik Durm, Raphael Guerreiro, Marcel Schmelzer, Marc