Lewis O'Brien is brought down in the Lions box after a tussle with Ben Thompson and the hosts have a penalty!

Bristol City keeper Daniel Bentley makes a great reaction save from Jordan Hugill's point-blank header, but the flag was up anyway.

It was some cross from Jacob Sorensen. Good play all round.

The visitors have brought on lively forward Antoine Semenyo for Hakeeb Adelakun.

QPR striker Charlie Austin has had his first sight at goal in Wales.

The on-loan man controls a cross on his chest but then volleys over the bar.

Austin is one shy of 50 goals for Rangers in all competitions, having re-joined from West Brom last week.

It's still the hosts doing the pressing at the Brentford Community Stadium.

Hatters keeper Simon Sluga tips over a shot from Sergi Canos.

The Spaniard let fly from 20 yards out, and it was heading for the top corner.

Todd Cantwell keeps hold of the ball for a bit too long after conceding a free-kick, with Bristol City midfielder Kasey Palmer pushing him in frustration.

Both players go into the book.

Norwich have lost just two of their last 29 home Championship matches, stretching back to their 2018-19 promotion season.

The visitors, meanwhile, haven't won in nine league games against the Canaries.

Stats aren't on Bristol City's side but they've started the second half relatively brightly.

Brentford have started with purpose after their delayed start to Championship action this year.

Midfielder Mathias Jensen has a shot from 25 yards blocked by a Hatters defender.

The Bees have won their past four home league games against Luton. This fixture ended 7-0 to the hosts last season.

Bristol City get us started in the second half in Norfolk.

No changes to report at the break.

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The four 19:00 GMT kick-offs are getting under way.

Brentford are picking up their promotion push at home against Luton after an enforced lay-off.

Cardiff are looking to avoid a fifth successive defeat against QPR.

A Nottingham Forest side looking to move away from danger host play-off chasing Middlesbrough and Huddersfield welcome out-of-form Millwall.

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Cast your mind back to 12 December and Nottingham Forest were only out of the drop zone on goal difference after gaining just one point from seven games.

But boss Chris Hughton - who replaced Sabri Lamouchi in October - does now appear to be getting a tune out of his squad after three wins and three draws from their past six.

Eighth-placed Middlesbrough have become inconsistent of late, suffering disappointing defeats against strugglers Sheffield Wednesday and Birmingham, but wily manager Neil Warnock has won his past five league matches against Forest and knows how to get results.

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Huddersfield Town are about as mid-table as you can get, sitting 10 points off the play-offs and 11 above the relegation zone in 14th place.

So which way will the Terriers' season go?

Carlos Corberan's men are enduring a blip which has seen them lose back-to-back games, and three of their past four.

Perhaps the arrival of experienced centre-back Richard Keogh will shore up their defence as he goes straight into the side.

Millwall are on an even worse run, having won just one of their past 15 Championship games stretching back to October.

That sequence has left the Lions six points ahead of the bottom three. Boss Gary Rowett will be hoping for a first win in five to stop their slide.

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In the break in Norfolk, a reminder there are four more games starting in 10 minutes' time.

We've already previewed two of them, so let's tell you about the other couple.

A fairly low-key end to the half at Carrow Road, but leaders Norwich City are ahead.

For all their slick passing and interplay it was a ball into the box and a glancing header from a target man, Jordan Hugill, which has the hosts in front.

Bristol City have had to do a lot of chasing and will need to change their approach if they are to avoid a fourth successive away defeat.

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The Championship has been a non-event for Brentford in 2021.

The Bees were second in the table after beating Bournemouth on 30 December, but have not been in action since after having three league games called off because of coronavirus cases.

Thomas Frank's men return to action lying five points off the top two in sixth place - but with two games in hand on four of the five clubs above them.

The west Londoners were in fine form before their enforced lay-off, on a 15-match unbeaten run. So can they pick up where they left off?

Luton travel to the capital looking to upset the applecart, having won two of their past three in the league.

Nathan Jones' side have only scored six goals away from home - the joint-second lowest in the division - but that has been enough to give them four wins on the road.

A graphic comes up showing that Jordan Hugill has only touched the ball eight times, fewer than anyone else on the pitch, but he gives Norwich a focal point which they sometimes lack.

What reaction will we see from Bristol City?

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Bristol City have had to get through some periods of Norwich pressure but they've certainly shown enough to suggest they can trouble the hosts.

Famara Diedhiou has held the ball up nicely at times but he does often look a tad isolated.

Ben Gibson is the definition of a ball-playing centre-back!

He plays a lovely progressive pass to Norwich team-mate Kenny McLean, whose powerful strike is excellently tipped wide by Bristol City keeper Daniel Bentley.