Don Bellucci Jibola:, external Liverpool are better in the game than Chelsea. Chelsea yet to register a shot on target, woeful performance.

Footyographer:, external Liverpool came with a gameplan that has worked. Chelsea have been lethargic.

Mark Underwood:, external Shocking officiating for 45 minutes. Oliver shouldn't be given another game this season on this showing.

Josh Farrar:, external Would hate to be a referee, even more so this season. Getting stick from all angles.

Alex Timperley:, external For a 'hardman' Diego Costa is surprisingly easy to bring down it would seem. You never saw Vinnie Jones flopping about like that.

Dianne:, external After a few meaty tackles and a handball there's a yellow card produced for a shirt tug?

Here's what the number crunchers make of it all...

BBC Radio 5 live Danny Mills at Stamford Bridge

"Chelsea had the better of the game to begin with, but Liverpool have created the clearer chances. I think Liverpool are vulnerable though - I'm not convinced by Markovic and Moreno in the wide positions."

Image source, PA

And there it is, the half-time whistle. It's been eventful so far - Chelsea could have had two penalties while Liverpool might have felt Diego Costa should have been sent off. What do you think?

One minute of injury time signalled. Almost time to stop for breath.

Phil in Greenwich: On a night when it could be critical, it seems unfair that Liverpool get 120 minutes to score an away goal when Chelsea only had 90!

BBC Sport chief football writer Phil McNulty at Stamford Bridge

Image source, Getty Images

"Chelsea manager Jose Mourinho is not a happy man. He has been gesticulating furiously on several occasions when his side have delayed in possession and almost been robbed as Liverpool play that intense pressing game Brendan Rodgers favours. Think that will be high on his list of half-time messages."

The Playwright:, external Referee Michael Oliver has remembered he has cards.

Philippe Coutinho continues to be Liverpool's most inventive player and he cuts inside and his shot takes a deflection out of play for a corner. Close, but no cigar.

BBC Radio 5 live Danny Mills at Stamford Bridge

"There should have been a lot more yellow cards if you're going to give one for that (41 mins). Hazard waited for the hand of Henderson on his shoulder, then stopped dead and made the referee make a decision."

Image source, AP

Interesting point made by Joshua below. I imagine some love Costa's confrontational style, while others are uncomfortable with it?

Mikhail AR Johnson:, external Chelsea playing sloppily and picking the wrong passes. Annoying.

Joshua Kwanya, external: As a Chelsea fan, I have never loved Diego Costa's attitude. Though a good player.

Chris Wiedmann:, external Liverpool lacking that class finish in the final third. Cracking game so far.

Jordan Henderson is chasing shadows when Eden Hazard has the ball and an unfair challenge on the Belgian results in the night's first yellow card for the Liverpool midfielder.

Connor Sammon has scored his first goal in a Rotherham shirt to double their advantage against Bolton in the Championship. A win would move them further clear of the relegation zone as Millwall, who are currently in the bottom three, are still goalless with Reading.

Chesterfield lead Crawley in League One - Eoin Doyle on target, while Cambridge United are one up against Dagenham - Cameron McGehaan.

Chelsea with a free-kick 25 yards out and Oscar steps up, wraps his foot around the ball and steers it across the face of goal but wide of Simon Mignolet's sticks. Decent effort from the Brazilian, who follows up with a low drive which goes wide.

Toby Tompkins:, external Diego Costa is in one of his moods where he'll either score the winner or get sent off.

EPM:, external Costa reminds me of a certain Uruguayan who played for Liverpool last season.

Tim Arstall:, external Controversial penalty calls, stamps and a raving manager. Think this tie has a red card on the way.

Adam in London: Why are Chelsea so desperate for the foul? They aren't playing to the whistle, and that's why they aren't getting decisions go their way.

Image source, AFP

Philippe Coutinho has clearly been pinpointed as Liverpool's main threat. The minute he crosses the halfway line, there are three defenders around him. The game continues to be played at a frenetic pace. Can this be sustained?

Shohidur Rahman:, external How many chances do Liverpool want? Should be at least two up by now.

Nathan Coleclough: , externalHow many chances?

Eddie:, external What a miss by Coutinho.