Gary Rose
BBC Sport at Anfield

As routine a half as Liverpool could have hoped for and a scoreline that will no doubt please the thousands or so cold Reds fans hoping to avoid the late night extra time would bring.

For Norwich fans it is looking like another miserable game against Liverpool but the travelling fans are taking it in good spirit and were indulging in a bit of a singalong to "Tequila" by The Champs just before the half time whistle.

Armando Broja goes solo when maybe a cross would have been better.

He's capable of finding the net from this tight angle but gets his shot wrong, sending it flying high and off target.

Five minutes remaining, you'd expect world and European champions Chelsea to see out the game from this situation.

Fifteen minutes to go at St Mary's. It has been fiercely-contested tie, this. Has it got another twist for us?

The last act of the half was Przemyslaw Placheta flying over the advertising board following a challenge with Konstantinos Tsimikas. The medical staff are quickly down there but thankfully he looks OK. At one point he was just a couple boots dangling in the air.

Milot Rashica fires a shot just wide at the end of the half, but it has been all too easy for Liverpool.

They are cruising into the quarter-finals unless Norwich can stage something remarkable here.

Just under 10 minutes to go at Kenilworth Road, do Luton have a second wind in them?

As it stands, we're getting a clean cut and none of the three games are heading to extra time.

FA Cup

A reminder...

Every fifth-round match is being played on a weekday to help alleviate fixture congestion.

As in previous rounds there will be no replays, with matches going straight to extra time and penalties if required.

Matthew Upson
Former England defender on BBC One

Look how delighted Romelu Lukaku is with that goal. It means a lot to him. That is what happens when you put the ball in key areas of the pitch. It is about getting in where it hurts and Lukaku does it perfectly.

Martin Keown
Former England defender on BBC Red Button

It was never in doubt. A really emphatic penalty down the middle. Take that.

That Saints goal was the cue for a bunch of fans to invade the pitch. The stewards quickly mop them up and haul them away to sit out the rest of this game.

Gary Rose
BBC Sport at Anfield

Is Takumi Minamino going to play another part in helping Liverpool to a second cup final?

He scored four goals in five League Cup games on the way to Reds' trophy win on Sunday and he's lighting up this FA Cup tie with a clinical display.

His double tonight takes him onto 10 for the season and highlights just how every player in this Liverpool squad plays their part.

Image source, Getty Images

Last man Malang Sarr gives the ball away to Danny Hylton, but the sub is still getting warmed up and the Chelsea man recovers.

Matthew Upson
Former England defender on BBC One

Be nice to see Robert Snodgrass' left foot again - he has got a lovely delivery from set-pieces.

There we go. Dawson is adjudged to have fouled Broja and James Ward-Prowse has a chance to make it 2-1.

Jorginho makes way for Reece James.

For Luton, Robert Snodgrass makes his debut and Danny Hylton also comes on, Admiral Muskwe and Carlos Mendes Gomes exit.