FT: Lincoln City 1-0 Ipswich
Arnold scores late winner - Imps face Brighton
FT: AFC Wimbledon 1-3 Sutton United - Sutton to play Leeds
FT: Barnsley 1-2 Blackpool - Seasiders face Blackburn
FT: Crystal Palace 2-1 Bolton - Palace play Man City
FT: Fleetwood 0-1 Bristol City, Burnley 2-0 Sunderland
Lincoln City 0-0 Ipswich
Terry Butcher
Former Ipswich defender at Sincil Bank
Mick McCarthy should be going ballistic against his team. It's been all Lincoln and they deserve to be ahead. Ipswich can't get out, Ipswich can't get forward.
Lincoln City 0-0 Ipswich
Trevor Sinclair
Ex-Man City & West Ham winger at Sincil Bank
They've bossed it. They've completely shown why they got a draw at Portman Road. Everyone is making good decisions on the Lincoln side. They were very close to getting the opening goal.
Angus MacDonald (49 mins)
Barnsley are level thanks to Angus MacDonald's first goal for the club, the most Scottish-sounding man in Yorkshire stretches to head in a cross.
Image source, Rex FeaturesAFC Wimbledon 1-0 Sutton
Sutton race out of the blocks quicker than Usain Bolt! Barely 10.89 seconds are on the clock before the non-league visitors carve open the Wimbledon defence. Keeper James Shea smothers Roarie Deacon's shot before Maxime Biamou bundles wide from about six yards. Got to hit the target!
Burnley 1-0 Sunderland
Sunderland have finally crafted something in this game - Seb Larsson plays a neat one-two with Javier Manquillo and tries to lob Burnley keeper Nick Pope from 25 yards out.
Pope was caught short but Larsson's effort floats narrowly over the bar.
As it stands we are heading for extra time at Lincoln and Crystal Palace...
Lincoln City 0-0 Ipswich
Looks like Chris Sutton isn't the only one questioning which of these teams ply their trade in the National League...
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Lincoln City 0-0 Ipswich
Chris Sutton
Ex-Chelsea striker at Lincoln v Ipswich
It was a brilliant save, but another unbelievable chance goes begging for Lincoln City!
Lincoln City 0-0 Ipswich
Lincoln City 0-0 Ipswich
Chris Sutton
Ex-Chelsea striker at Lincoln v Ipswich
I expect Mick McCarthy to go in at half-time and read the Riot Act to his players. Ipswich have been dreadful.
Lincoln City 0-0 Ipswich
And so close again! The mass of Matt Rhead causes more problems for Ipswich as he nods the ball on, Luke Waterfall hits the ball on the bounce and Dean Gerken makes a cracking one-handed save! Right on the fingertips.
Image source, ReutersLincoln City 0-0 Ipswich
Jermaine Jenas
Former England midfielder at Sincil Bank
Ipswich have not laid a glove on Lincoln so far. They're just hanging on. I'm sure Mick McCarthy will want a lot more.
Crystal Palace 0-0 Bolton
Image source, Getty Images#bbcfacup
No goals yet at Sincil Bank, but at least we've had a couple of cracking TLC references to keep us going...
Ian in Whitley Bay: Re 20:23 - when the academy lads are cleaning Waterfall's boots, I hope he sings "I don't want no scrub"...
Lincoln City 0-0 Ipswich
If anything, he's hit that [not] too well...
Lincoln City 0-0 Ipswich
Jermaine Jenas
Former England midfielder at Sincil Bank
The difference between the two sides is one knows exactly how they want to play and the other one doesn't. For Lincoln, they know exactly how they want to play. They get it in wide areas, get the ball into the box and get it into Rhead as much as possible and it obviously suits them well.
The four 19:45 GMT matches are back under way for the second half.
A reminder that we could go to extra time and penalties...
Barnsley 0-1 Blackpool
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Burnley 1-0 Sunderland
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Lincoln City 0-0 Ipswich
Chris Sutton
Ex-Chelsea striker at Lincoln v Ipswich
Ipswich have no rhythm to their play whatsoever, they're just sending long hopeful balls up the pitch and Lincoln are coping with ease.