Tottenham have one foot in the Champions League quarter-finals.
Tottenham Hotspur took a huge step last night towards the Champions League quarter finals.
Spurs beat Borussia Dortmund 3-0 at Wembley, to build a commanding lead.
Here is a look at four things we learned from the win...
Mauricio Pochettino's tactics were spot on
Mauricio Pochettino started three centre-backs for the second season in a row at home to Borussia Dortmund. Just like last time, it worked.
On this occasion, Dortmund lacked a top class striker like Pierre-Emerick Aubameyang and it showed.
Pochettino gambled with his ultra defensive set up, making sure Spurs did not concede an away goal.
It worked a treat, once Spurs went one up, Dortmund had no answer.
Tottenham's 'break glass in case of emergency' option still works
It's been a while since Jan Vertonghen played at left-back for Tottenham.
Last night he was asked to play as a wing back, with both Danny Rose and Ben Davies injured.
What seemed like a desperation play from Spurs turned into a match winning one, with Vertonghen grabbing a goal and assist.
Tottenham's strength in depth with Davinson Sanchez and Juan Foyth allowed them to play three centre-backs and still spare Vertonghen.
Lucas Moura is no striker
One choice which did not really work too well was picking Lucas Moura up front.
The Brazilian nearly scored a spectacular volley in the opening moments but then offered nothing.
He lacks the presence of Fernando Llorente and Spurs had no focal point with him up front.
Llorente proved his quality by coming off the bench to score a late third.
Tottenham are for real
Critics have lined up to write Tottenham off all season, especially when their worst case scenario of Harry Kane an Dele Alli being injured happened.
Heung-Min Son returned to save Tottenham's campaign and he has now netted in four consecutive matches.
Tottenham are just two points off the Premier League lead if they win their game in hand, and have one foot in the Champions League quarter-finals.
With Kane and Alli close to returning, Tottenham are in with a real shot of winning two trophies.