Fulltime: Arsenal 0-0 Hull City
- Campbell hit the post with freekick
- Welbeck started for the Gunners
- Nick Powell makes debut for Hull City
So, Arsenal dominated the game but failed to deliver the knockout blow. They hit the post through Joel Campbell and created the occasional half-chance, yet they lacked a bit of creativity today.
Both teams made a huge number of changes beforehand and neither will have craved a replay. But Arsenal retain their unbeaten record in the cup since 2013 and Hull will welcome the money that comes with another match against the Gunners.
Thanks for joining us this afternoon.
Full-time: Arsenal 0-0 Hull City
Alexis gets the ball up and over the wall, but the keeper punches it away.
Hull survive, and there are only seconds left in the game.
We're into injury time now.
And Arsenal have a freekick on the edge of the box. Hold tight, Hull fans.
At the other end of the pitch, meanwhile, The Ox flashes a volley just wide.
The England international hit the ball into the ground and it skipped the wrong side of the post from an Arsenal perspective.
Time is running out for the Gunners, now.
Less than five minutes left now. Arsenal appear to be running out of ideas and energy, too.
But they scored a dramatic late goal against Leicester City last week - can they do it again?
Both managers are down on the touchline now, barking instructions at their players.
It's become a question of whether Hull can hold out before the sand runs out of their hourglass.
There must be some heavy legs in the away side - they've done an awful lot of running. But they also stand on the cusp of an upset.
It's all Arsenal, but there's still no goal.
Arsene Wenger wears a concerned look on his face down on the touchline and there's an air of desperation starting to creep into Arsenal's play.
They have their big guns (excuse the pun) on the field now, though.
A third and final change for the Gunners.
Alex Owobi gets a round of applause from the fans as he is replaced by The Ox. There are just over 15 minutes left in the game.
Although he didn't score this afternoon, Danny Welbeck offered a typically bright and breezy performance.
However, Olivier Giroud ought to offer a focal point for Arsenal's attacks, something they have maybe lacked so far.
The Frenchman should also be a threat from setpieces.
The Arsenal boss has made a double change. Danny Welbeck has made way for Alexis Sanchez.
As we said before the game, Arsenal haven't lost in this competition since 2013. But with time ebbing away, one mistake may be enough to eliminate them from the tournament.
Arsene Wenger will be busily weighing up his options, especially as he needs to balance the club's ambitions this season.
The changes haven't made a massive difference, to be honest. It's still one-way traffic at the Emirates, but the Gunners don't have a goal to show for their efforts.
Giroud might add more of a physical presence to their forwardline. We've played an hour now.
And he's not done there, either.
Steve Bruce thinks it's time for a change...
Ah, another close call!
Joel Campbell strikes the upright with a brilliant freekick. The ball rebounds to the edge of the area but the subsequent shot is smacked over the bar.
Hull are hanging on by their fingertips.
Oh, Arsenal nearly unlock the door.
Elneny tees up Iwobi on the edge of the box, but his shot is just deflected wide. That appeared destined for the far corner.
Hull's goal is intact but only just.
A reminder of the options available to Arsene Wenger.
Subs: Macey, Bellerin, Monreal, Coquelin, Oxlade-Chamberlain, Alexis, Giroud
Despite his remarks before the game, you can't imagine Arsene Wenger being keen on a replay.
And they have Alexis Sanchez and Giroud warming up on the touchline. Perhaps it's time for a change already.
We're back into the action at the Emirates.
45 minutes for Arsenal (or less probably, Hull) to find a goal.
Half-time: Arsenal 0-0 Hull City
Plenty of huff and puff so far, but we're still to see our first goal of the afternoon.
Arsenal have dominated, yet Hull have held firm. Is an upset on the cards? We wait to see...
From what we've seen so far, Hull's best hope will come from a setpiece, when they have the chance to push men forward.
They've posed a minor threat from the one or two freekicks they've been awarded in the Arsenal half.
Anyway, they've almost survived till half-time, which is seconds away.