Middlesbrough are through to the quarter-finals for the first time since 2019
Port Vale reach the last eight for the first time
Exeter 1-2 Middlesbrough
Nathan Jones
Former Southampton manager speaking on BBC Radio 5 Live
It is going to be about moments now for Exeter and they need to be good in this moments. When they have set plays they have to produce.
Exeter 1-2 Middlesbrough
Exeter make a couple of changes as Yanic Wildschut replaces Admiral Muskwe, while Cheick Diabate is on for Jack Fitzwater.
Exeter 1-2 Middlesbrough
Brent Pilnick
BBC Sport at St James Park
I think the cup dream for Exeter may be ending tonight
Boro have really stepped it up and the visitors look a lot more relaxed now.
What Exeter have to hope is they don't let this get too far away from them as they do not deserve a big loss.
Mansfield Town 0-1 Port Vale
Great save by Christy Pym as he keeps out Jesse Debrah's effort from close range to keep the home side in this.
Sam Silvera (59 mins)
The Championship side has turned this around.
It is a neat finish as Sam Silvera cuts inside and sends a low finish into the bottom corner.
Middlesbrough have come out fighting and are deservedly ahead now with two goals in nine minutes.
Exeter 1-1 Middlesbrough
Nathan Jones
Former Southampton manager speaking on BBC Radio 5 Live
There has been a definite tempo shift from Middlesbrough. It is not just running more but the way they are moving the ball around, everything is a bit sharper.
Mansfield Town 0-1 Port Vale
Port Vale are looking to try and get a second and end this tie as a contest as Uche Ikpeazu tries to find Tom Sang with a through ball, but Sang is offside.
Exeter 1-1 Middlesbrough
Middlesbrough have really stepped it up now and are looking to take the lead for the first time. Exeter, meanwhile, have dropped back and are more focused on defending now.
Exeter 1-1 Middlesbrough
Brent Pilnick
BBC Sport at St James Park
There you have it - increased Boro pressure and an equaliser.
It was a lovely curling effort by Rogers - but Exeter may be left unhappy with it as Jack Fitzwater is still down after being dispossessed by Alex Bangura in the build-up.
Exeter 1-1 Middlesbrough
Nathan Jones
Former Southampton manager speaking on BBC Radio 5 Live
They've stepped it up in this half and that is a wonderful finish. That is what Morgan Rogers is capable of.
Morgan Rogers (50 mins)
Lift off in the away end!
The Championship side has come out with more intent and get their reward as Morgan Rogers fires home with a great finish just outside the box.
Middlesbrough fans have had a long way to travel but they are in buoyant mood now.
Exeter 1-0 Middlesbrough
Brent Pilnick
BBC Sport at St James Park
Boro have started this second half really strongly - the midfielders look as though they have pushed a good 10 yards further forward this half.
It's caused Exeter a few problems early on and a a couple of panicked clearances.
Alfie Devine (50 mins)
The visitors take the lead!
Alfie Devine is allowed to run through midfield and he drives a shot from the edge of the box that takes a bit of a deflection to fly into the back of the net.
Are Port Vale on their way to the League Cup quarter-finals for the first time?
Exeter 1-0 Middlesbrough
Middlesbrough are on the attack early in the second half as Morgan Rogers shows tricky feet on the edge of the area and tries to pick out Isaiah Jones, but Exeter do just enough to deal with the threat.
Exeter 1-0 Middlesbrough
And we are back under way at St James Park.
Mansfield Town 0-0 Port Vale
Aden Flint receives an early knock as he clashes with Uche Ikpeazu but the big Mansfield defender is soon back on his feet.
Mansfield 0-0 Port Vale
We're back under way in this one at the One Call Stadium.
HT: Exeter 1-0 Middlesbrough
Nathan Jones
Former Southampton manager speaking on BBC Radio 5 Live
If Ryan Trevitt's goal turns out to be the winning goal then it would be a fitting and worthy one.
If I am honest I don't think it will be. Middlesbrough will lift the tempo in the second half.
This one isn't done and dusted yet.
FT: Mansfield 0-0 Port Vale
Tom Gayle
BBC Radio 5 Live commentator at the One Call Stadium
This has been lively. The visitors have been more dominant when it comes to the chance count but the League Two hosts had the best chance with Davis Keillor-Dunn's volley.
Exeter 1-0 Middlesbrough
The League One side have the lead at the break.
Exeter City are 45 minutes away from a first-ever appearance in the League Cup quarter-finals.