Use play icon at top of the page to watch live BBC One coverage
Also listen to commentary from BBC Radio Humberside & BBC Radio Merseyside
Hull are 19th in the Championship
Everton are 15th in the Premier League
Hull were runners-up in 2014; Everton are five-time winners, last in 1994-95
QPR 1-1 Rotherham (QPR win 8-7 on pens)
All over! QPR win 8-7 on penalties after Lyndon Dykes scored a 115th-minute equaliser.
Robert Dickie made it 8-7 and Chiedozie Ogbene then missed to send the League One leaders out.
Chelsea 3-0 Chesterfield
Phil McNulty
BBC Sport chief football writer at Stamford Bridge
Chesterfield manager James Rowe knows the game is up already here but he is living every minute of the action - as the fourth official will confirm. He is very animated in his technical area and was furious when Saul was not punished for flattening Saidou Khan.
Sadly, but predictably, this is already about keeping the score down for Chesterfield.
Swansea 0-1 Southampton
It should be 2-0 to Southampton.
James Ward-Prowse lines up a free-kick from 35 yards out but, with Swansea opting to play with a high line, Ward-Prowse decides to dink a pass over the top of the defence and Nathan Tella runs on to it but shoots over when he should've done much better.
Demarai Gray (21 mins)
However, that is a lovely equaliser!
Demarai Gray exchanges a one-two with Anthony Gordon before curling in to draw the Premier League side level after a torrid start.
Cool Gray finish brings Everton level
Romelu Lukaku (20 mins)
And now Romelu Lukaku gets in on the act!
The striker, who recently apologised for the comments he had made about his time so far at Chelsea in an interview, makes no mistake from close range as he sweeps in first time.
Just 20 minutes on the clock and Chelsea have their place in the fourth round wrapped up.
FT: West Brom 1-2 Brighton
Brighton & Hove Albion
Brighton boss Graham Potter on his side's extra-time win over 10-man West Brom: "If you get two yellow cards it's a sending off. They are the rules.
"They scored from their only attack, I think. We deserved to win. West Brom were a Premier League side last season and have good players, they are well organised and hard to play against.
"Their keeper has pulled off some saves but our quality has shone through and we're delighted to go through.
"Of course it would be nice to have a cup run. We wanted to win the game today. That's what set out to do."
Hull City 1-0 Everton
That was almost sensational from Keane Lewis-Potter!
The Hull City forward shrugs off a challenge, creates space for the shot but blazes over from outside the penalty area.
'You're getting sacked in the morning' chants ring around the MKM Stadium. Uncomfortable scenes for Rafael Benitez.
Callum Hudson-Odoi (18 mins)
Hudson-Odoi scores to extend Chelsea's lead
No upset developing here.
This is a lovely goal as Callum Hudson-Odoi cuts in from the left and bends a superb strike out of the goalkeeper's reach and into the far corner.
Chesterfield gave him too much space and Hudson-Odoi took full advantage.
QPR 1-1 Rotherham (6-6 on pens)
Nobody wants to lose this!
We're at 6-6 in the penalty shootout between QPR and Rotherham, as Tolaji Bola brings the League One side level once more...
Yeovil Town 0-0 Bournemouth
We're under way in the late kick-off between Yeovil Town and Bournemouth now too.
Grim conditions at Huish Park.
FT: Port Vale 1-4 Brentford
Port Vale manager Darrell Clarke: "Brentford had control in the first half. We looked a bit rusty and looked like we hadn't played for 28 days. In the second half we had a good go.
"When you get it back to 2-1 you never know, but good sides like Brentford are ruthless. We have a lot of lads coming back from Covid and injury, so I'm really pleased we put in a half-decent performance on the day.
"We'll look after him until the end of the season. I have massive belief in my squad. As soon as we get the rhythm back, we'll be more than a match in League 2.
"It's been an enjoyable ride [in the FA Cup] but we've got 25 cup finals in League 2 now."
Swansea 0-1 Southampton
Dafydd Pritchard
BBC Sport Wales at the Swansea.com Stadium
We know about the commentator's curse, but is there such a thing as the match report writer's curse?
Just a matter of seconds after I wrote that Swansea had made the better start, Southampton take the lead with an assured finish from Nathan Redmond.
Birmingham 0-0 Plymouth
An early chance for Plymouth as they counter at pace. Danny Mayor leads the charge and slides a pass to striker Ryan Hardie but, on his left foot, drags the ball wide of the far post.
Chelsea 1-0 Chesterfield
Phil McNulty
BBC Sport chief football writer at Stamford Bridge
Chesterfield's supporters have packed one end of Stamford Bridge in their thousands and while this is the start they might have feared there is still a wall of noise coming from behind Scott Loach's goal.
They are relishing this FA Cup third round tie.
QPR 1-1 Rotherham (3-3 on pens)
Wes Harding misses for Rotherham, but Andre Dozzell can't take advantage!
Joshua Kayode takes us to 3-3 after four penalties each. No room for error now...
Chelsea 1-0 Chesterfield
Scott Loach prevents Chelsea from going further ahead as he produces a fine reaction save from Hakim Ziyech's fierce drive from the right.
Barnsley 5-4 Barrow
And that's it!
Barnsley edge a nine-goal thriller to reach the fourth round.
FT: Leicester 4-1 Watford
Leicester City
Leicester boss Brendan Rodgers to BBC Sport: "I was absolutely thrilled with the performance – we only had eight senior players fit and they all played, and we had 10 academy products in our squad today.
"To see them come in and perform against another Premier League club, with that understanding of the game, and what they gave the game, I was absolutely thrilled for them.
"You consider Hamza Choudhury was playing at centre-half – what a performance that was from him. I rang him last night to tell him he would have to play there rather in midfield – he just accepted it and played to a really high level.
"We all want to dream. We dreamt last year and won the trophy. Today, with so many players out, to produce that performance and scoreline, makes me very proud and we’re in the hat which is the most important thing."
Hull City 1-0 Everton
Asmir Begovic does well under serious pressure in the Everton goal, getting to a cross first before a foul is awarded in his favour. It's been a rather busy start for Begovic, who will be hoping his side can get a hold on this tie quickly...
Barnsley 5-4 Barrow
Oooh. It's all boiling over late on at Oakwell after a couple of heavy challenges in quick succession.
Barrow players showing a bit of frustration, and now there's an altercation on the touchline too.
A few yellow cards are dished out to cool things down.