Panic could have set in after Pierre Emerick Aubameyang slipped through the net to score the opener, but this is a much-improved Spurs team.
Goals from Harry Kane and Son Heung-min answered the German test and helped the London side pick up an impressive 2-1 victory at Signal Iduna Park.
Spurs will now go on to win Group H ahead of Real Madrid and Petr Bosz’s side, and they’ve easily been the best side and will fear no one in the last 16.
Here are five points to pick up from Spurs 2-1 over Dortmund.
Son Rises To The Occassion
When the dynamic trio of Kane, Dele Alli and Christian Eriksen are fit, South Korean international, Son, struggles to get in the Spurs team.
Playing 3-4-1-2 on Tuesday, the Argentine coach found a way to play all four, teaming him up with Kane in attack, looking for Son to play around the striker and help get him involved.
There are question marks over the fitness of the 24-year-old continue following his hamstring injury, but the energy that Son brings counter-acted any problems.
He finished with four shots, two on target and completed two dribbles and one key pass. Son even put in the defensive work, winning two tackles and made one clearance. The Korean deserved his goal and finished it superbly in the corner.
Spurs missed a spark against the Gunners on Saturday. The former Bayer Leverkusen man has proved again he can be their X-Factor. Food for thought for Pochettino.
Harry Winks Crucial Again
Capped by England, starring against Real Madrid, Harry Winks stock continues to rise and he did nothing to stop that away against Dortmund.
With 90 touches, via WhoScored, no one in the Spurs team saw more of the ball and he is the type of player, who if you don’t pay close attention, you could miss.
Everything is done with composure and a seren calmness. The 21-year-old keeps the ball moving, always finds an open man. He is exactly what they missed from the North London derby. Someone to put their foot on the ball and make Spurs tick.
Pochettino will be wary of over-playing the young midfielder, but he has proven his ability to play in the big games and should be counted on for all Spurs key matches.
Arise Dan-Axel Zagadou
Despite the defeat, one of the brightest spots for Dortmund was the performance of 18-year-old centre-back Dan-Zxel Zagazou.
A summer arrival from Paris Saint-Germain’s B-team, he didn’t cost the German club a penny and looks to be one of the bargains of the season.
He finished with one tackle won, two interceptions and four clearances. The teenager won two aerial challenges and completed 95.7 per cent of his 47 passes.
Controlled under pressure, a composed defender, he looks a very talented youngster. Spurs signed Davinson Sánchez from Ajax in the summer and the Colombian has settled well and looks another top pick up by Pochettino and Daniel Levy.
Sánchez blossomed under Peter Bosz at Ajax and now Zagadou looks to be the next defensive disciple to learn from the Dutch coach.
If you can make these type of performances in your first season in the Champions League, you are definitely a player worth watching closely.
Never count out Harry Kane
Sluggish against Arsenal at the weekend, 45 minutes into this important Champions League encounter and it looked like Kane was again struggling with full-fitness.
He had only managed 11 touches in the first-half, with just two coming in the BVB penalty area. Yet, once again, the Englishman proved he is a top-class striker.
Moments after the restart, he took his only clear chance of the game. Alli played the ball into his feet, but the first-touch was lacking. However, that only worked in his favour, getting the ball out of his feet, handing the forward a half yard and he finished low at the near post.
His mini drought of three goals without a game was over and he fully displayed that regardless of how he is playing, he just needs that one sight of the back of the net.
Kane now has 13 goals in all competitions and six in the Champions League. Doubts will continue over his fitness, just his opponents need to worry about him when he finds it.
Real Madrid beat APOEL 6-0 in Cyprus and they move on to 10 points, but with 13 points on the board, Spurs have won the group due to their head-to-head with the Spanish giants and can relax knowing they have won the group.
What a difference a year makes.