Here we go.

Coventry kick us off. No changes across the board.

We're a quarter of a way through this two-legged affair and no-one has the advantage yet.

Boro have shown themselves to be a formidable second-half team this season, but they were a decent enough first-half one here.

Coventry have the home advantage, great support. They know it's a long haul to Teesside on Wednesday. Something to take with them would be perfect.

Gary McSheffrey
Former Coventry winger on BBC CWR

I think we're getting joy out wide - the wing-backs just need more belief.

Jake Bidwell needs to gamble a bit more - he's been quite sheepish in his end product.

Coventry looked better when they made the game ugly and did the basics well.

It's all about the first contact and landing on second balls to spoil Middlesbrough's flow.

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Image source, PA Media

Takeaways from that first-half?

Coventry did not respect possession enough for me initially, didn't build their play, although they did change that as the match went on.

Viktor Gyokeres and Matty Godden were isolated for large periods, getting them into the game somehow will be Mark Robins' big conundrum.

Middlesbrough always seemed to have players in space to receive the ball, whether it was Riley McGree or Chuba Akpom.

However, they don't have a goal to show for their efforts. One could be key.

Steve Ogrizovic
Ex-Coventry goalkeeper on BBC CWR

The half's gone very similar to how I thought it would.

You can feel the quality of this Middlesbrough team going forward.

Generally I think Coventry will be happy they're in at 0-0.

It's been a cagey first half - Coventry have had to defend but they'd want to get forward with more quality.

Image source, PA Media

Middlesbrough have come closest to breaking the deadlock at Coventry, with Ben Wilson making a key save to deny Chuba Akpom early in that first-half.

For a good half hour, it was all Boro.

However, Mark Robins will be heartened by the way his team fought their way back into it, and for all the possession and chances they ceded, it's still goalless.

Signs they were coming into it though. Finely poised.

One minute of added time.

Ged Scott
BBC Sport at the CBS Arena

After a restrained opening, Coventry have really woken up a bit over the latter stages of the first half.

One exciting burst of Braziliiality from Gus Hamer really got the fans on their feet - and thrillingly ramped up the noise in the stadium.

City really do need to take full advantage of the extra man their crowd provides when they are in full voice.

But the home side need to find more to get them shouting.

Coventry respond by racing upfield and winning a corner. Boro get it away.

Possession is retained.

The ball goes into the edge of the box but Gustavo Hamer is pinged by Bobby Madley for an arm to the face of defender Darragh Lenihan in the tussle.

It's been a closer tussle this, last 10 minutes.

Middlesbrough have the ball in the net and it's eagle eyes from the referee's assistant to shoot the flag up and rule it out.

Chuba Akpom split the defence with a laser-guided pass that Isaiah Jones tracked and coolly slotted beyond Ben Wilson.

Jones was off, made his run a fraction early.

Coventry just starting to pose a few questions for Middlesbrough's defence.

Brooke Norton-Cuffy strode forward, before letting off a strike which Darragh Lenihan wore on his rib-cage like a boxer taking a punch.

Viktor Gyokeres tip-toed his way through, Jake Bidwell lashed a shot which was hooked out by Boro.

More like it from the home side.

Viktor Gyokeres looks down at the turf, looking for a bobble to blame, after his first touch lets him down and he concedes a throw.

It was a ball zipped to him from Gustavo Hamer, but he's a little harassed, and didn't take it cleanly.

Credit for that goes to Middlesbrough, it's been suffocating for the Swede.

Image source, Rex Features

It's ratcheting up a gear.

Full on, full-pelt tackles flying in.

Kyle McFadzean has to race back to cover a ball in behind for Ryan Giles as Coventry were stretched.

The throw-in works its way back to Giles, but his cross is blocked.

Josh Eccles whacks away the set-piece for Coventry.

As you were...

Image source, Getty Images

Ben Wilson denies Middlesbrough again!

Coventry win the ball back, but the clearance is cut out, and Isaiah Jones is set off down the left.

He burrows into the box, under pressure, but his low, near-post effort is turned behind.

Corner.

Image source, PA Media

Coventry duo Callum Doyle and Liam Kelly wait for the deep set-piece at the back post, but as it sails across, the latter's header zooms wide.

In fairness, it was as if Doyle had marked him well and stopped him getting a clean connection.

Middlesbrough don't need any more help.

Liam Kelly bulldozes his way forward, runs onto a Viktor Gyokeres cut back and shoots, it's blocked, then Gustavo Hamer bobbles one across and Matty Godden just can't steer it on goal.

The longer it stays 0-0, even with possession and territory on their side, Middlesbrough nerves might just start to strain.

They need to take their chances.

Coventry get a corner, great work by Brooke Norton-Cuffy who dances beyond Ryan Giles and wins the set-piece.

Gary McSheffrey
Former Coventry winger on BBC CWR

This is what Middlesbrough do, isn't it.

They shape up in such a way that you don't know who to pick up.

Coventry have got to make this game a little bit ugly, and more physical.

Full-back Tommy Smith strides forward, collects a little square ball from Riley McGree for Middlesbrough, and lets fly, but Liam Kelly blocks and it sails for a corner.

It's a deep one, almost tracking a peeling round run from Paddy McNair but Luke McNally leaves it and it pings off a bewildered McNair for a goal kick.

Great run, but he seemed to clock off at the key moment.