Quality from Joe Johnson to not only stop Malo Gusto advancing but he's able to win a free-kick too.

Luton fans celebrate that like a goal.

Chris Sutton
Former Chelsea striker on BBC Radio 5 Live at Stamford Bridge

Luton can't find a way to keep possession.

They are hanging on in there at this moment in time but it is attack versus defence.

Can they maintain this energy? That would be my concern.

Image source, Getty Images

Another Chelsea corner comes to nothing but they come again with the ball lofted to the far post for Maxence Lacroix to head behind.

Should be doing better.

There's a sea of Luton orange away to the left behind Josh Keeley's goal and they're in good spirits.

They're also getting to see plenty of the action because that's the goal Chelsea are attacking.

Chelsea have progressed from 27 of their last 28 League Cup ties against sides from outside the top-flight, including the last 19 in a row since a penalty shootout defeat to Burnley in November 2008.

Tough for Luton then...

Morgan Rogers comes away from the challenge from Hakeem Odoffin with a slight limp.

Something Chelsea fans won't want to be seeing.

Chelsea work the corner short but Luton clear up high up the pitch for a moment.

Chris Sutton
Former Chelsea striker on BBC Radio 5 Live at Stamford Bridge

Great save, a good left hand from Josh Keeley to get it away from goal.

And now Chelsea have a corner.

The pressure isn't letting up.

Nizaar Kinsella
BBC Sport Chelsea reporter

The news of Emiliano Martinez joining, alongside manager Xabi Alonso's early popularity and some well-received new signings.

It feels a far cry to what this Stamford Bridge stadium sounded like last season in a dire campaign in which Chelsea finished 10th and without a trophy.

Image source, Getty Images

Cole Palmer shapes to shoot but he touches it to the right to create more of an angle for Reece James to force a diving save from Josh Keeley.

Estevao takes a whack on the ankle and Chelsea have a free-kick in a perfect position for a shot.

Chris Sutton
Former Chelsea striker on BBC Radio 5 Live at Stamford Bridge

Chelsea have that physical presence with Danny Welbeck as the centre forward.

Luton are going to have to defend a lot of crosses, I think Jack Wilshere will accept that.

Chelsea dominant so far but they've not had their shooting boots on.

Image source, Getty Images

Jack Wilshere looks frustrated on the Luton bench but I don't think there's much his side can do to stem the tide.

Estevao's ball in is flicked on by Danny Welbeck but it's easy for Josh Keeley.

Surely it's only a matter of time for Chelsea.

It's all Chelsea here. As you'd expect, of course.

They've got Luton penned into their own box but the travelling fans are delighted to see Malo Gusto's strike fly high over the goal.

Morgan Rogers takes the ball on the turn, drags it on to his left foot and has an effort charged down.

Chris Sutton
Former Chelsea striker on BBC Radio 5 Live at Stamford Bridge

I think Jack Wilshere will be delighted, 12 minutes on the clock and Luton have done okay.

Nothing really clear cut for Chelsea.

Image source, Getty Images

Stunning stuff between Cole Palmer and Estevao as they carve the Luton defence open.

Palmer opens his body in the box and looks for the far corner but doesn't get enough on it and Josh Keeley does well to save the rebound.

Morgan Rogers can't quite take Danny Welbeck's pass in his stride in his box and it's knocked behind for a Chelsea corner - which they make a right mess of.