Sigh, another card.

This is not nearly as good as the first period.

Paul Smyth fouls Millwall's Femi Azeez.

Yellow card for the QPR man.

Derby send on USA international Patrick Agyemang for Andreas Weimann. Is the £6m signing the answer?

It's Swansea who make the first move from the bench.

Adam Idah replaces Zan Vipotnik as they look for an opener.

Jamal Fyfield
St Albans defender on BBC Radio London

It's a great start to the second half for QPR, similar to how they started the first half.

Dembele will help raise the tempo for QPR.

How you feeling Saints fans?

Image source, Rex Features

Southampton are having a little spell of possession but it doesn't feel at all like they are going to find the net.

Surely, boss Will Still must be considering changing things up now.

It's scrappy now which will suit Millwall.

Thierno Ballo takes down Jimmy Dunne and is cautioned.

Rhys Norrington-Davies goes down in a heap as Billy Mitchell prepares to challenge him.

The problem for the QPR man is Mitchell pulls out of the tackle so it's a caution for simulation.

Another save from Jacob Zetterstrom keeps out Cameron Brannagan's low curler from 20 yards. The Derby goalkeeper is having a fine afternoon.

Yep, Liam Morrison's afternoon is over and on comes Amadou Mbengue.

Harvey Vale also goes off in a tactical switch for QPR to be replaced by Kader Dembele.

We have a problem for QPR's Liam Morrison - looks like an ankle injury.

More issues for QPR boss Julien Stephan.

Nice and bright again from Derby - they are on top now and making the running. They haven't tested Jamie Cumming in the Oxford net though.

Swansea, as one could have predicted, have come out with far more attacking spark than they had in the first half.

Ethan Galbraith thrashes the ball towards goal but instead sees it whack off a Saints players.

Marko Stamenic tries to keep alive near the half-way line but ends up fouling Leo Scienza in the scuffle for the ball to give Saints possession.

Paul Smyth goes past Ryan Leonard and then goes down.

Leonard is on a yellow card but there's no free-kick.

Smyth asks the question but there didn't seem much in it - trying to get the Millwall man a second caution?

Zan Vipotnik is the latest to receive a yellow card after fouling Saints defender Nathan Wood.

A cracking start to the half! First, it's much better from Derby as they peg the hosts back and force a few corners but then Oxford break away, Nik Prelec wriggles away from a challenge and powers in a shot that Jacob Zetterstrom saves well at his near post.

He is some keeper!

Along with Coventry and Bristol City, Millwall are one of three sides unbeaten away so far this season in the Championship.

They're also looking to go five unbeaten on their travels at the start of a season for the first time since 2015.

Can they hold on or do QPR have the minerals to get back in this?

We're back at it in West London.

Zeidane Inoussa, fantastic in the first half and looking just as super in the second, wins possession and barges up the left flank.

He's putting in some strong running but once against Saints defender Nathan Wood responds well, putting in a tackle to send the ball safely back to his keeper.

He clatters with the Swans forward in the process though and Inoussa needs a moment on the ground. He seems okay, much to the relief of the away support I'm sure.

Derby make a half-time change with reported Celtic target Bobby Clark on for Ben Brereton Diaz.