It's all Boro.

Marcus Tavernier meets a volley at the far post but it is straight at Hugo Lloris.

Danny Murphy
Former England midfielder on BBC One

Two really good opportunities for Middlesbrough in extra time, they should be winning the football match.

Wild from Jonny Howson, smashing one into the stands from a promising position.

BBC Two

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Matt Crooks gets a toenail on a cross but cannot get enough on it and Hugo Lloris gets down to gather.

Folarin Balogun shaping in a cross, looking to find the run of Matt Crooks, but it is too close to Hugo Lloris.

Five minutes remaining in the first half of extra time.

Pressure from Boro but they cannot get the final ball right and Spurs cling on.

Danny Murphy
Former England midfielder on BBC One

Bad decision making from Spurs, they can see Middlesbrough closing so have to go forward a bit quicker.

That could easily have gone in.

Ben Davies smacks a shot which loops off a Boro defender and over the crossbar.

Spurs have missed chances late on in this game.

Son Heung-min cannot reach far enough to convert Dejan Kulusevski's clipped pass over the top.

28 seconds into extra time and Dejan Kulusevski drives forward before drilling a low shot inches wide of the post.

But a replay shows it's actually a stunning save from Boro goalkeeper Joe Lumley.

An absolutely fabulous save, in fact.

Off we go for the additional 30 minutes.

Jonathan Woodgate
Former England defender on BBC One

Middlesbrough have been the better side, Jonny Howson has been the best player on the pitch.

It ends goalless after 90 minutes. Middlesbrough take a Premier League side into extra time for a second consecutive tie.

A rush of blood from Andraz Sporar, scuffing badly wide in the last chance of the initial 90 minutes.

Danny Murphy
Former England midfielder on BBC One

He should have scored, Son! That was the chance he has been waiting for, not his best header but it was a good move from Tottenham.

Chances are coming late on in this game.

Son Heung-min ghosts in at the far post but heads straight at Joe Lumley, who juggles but collects at the second attempt.

How has he missed??

In the final minute, Jonny Howson has a free header but like Matt Crooks before, he cannot find the target.