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Yeovil are currently 11th in the National League
Bournemouth are top of the Championship
Yeovil's best FA Cup run is to the fourth round, last in 2017-18
Bournemouth's best FA Cup runs have seen them reach the quarter-finals
Bristol City 0-0 Fulham
Tomas Kalas wipes down the ball, lines up a long throw and launches one into the Fulham box, but the visitors have enough bodies back to deal with it.
Domingos Quina then skips past a couple of defenders at the other end before dragging an effort wide from outside the box.
Keshi Anderson
Keshi Anderson gives Blackpool the lead against Hartlepool
Blackpool produced a third-round shock last season when they knocked out Premier League West Brom - and they're determined not to be on the end of a giant-killing today.
Keshi Anderson gives the Championship club the lead after a turn and shot. Good start by the visitors.
Coventry City 0-0 Derby
Ooft. Great chance!
Craig Forsyth is played in behind for Derby. He cuts it back into the middle for Tom Lawrence and Ben Wilson has to make a decent save.
Mansfield 0-2 Middlesbrough
Image source, Getty ImagesAround 20 minutes on the clock and Boro are dominating.
Caolan Boyd-Munce has gone close to making it 3-0 with a deflected attempt while Uche Ikpeazu has fired narrowly over the bar.
Coventry City 0-0 Derby
Derby have started off on the front foot as they switch it from left to right, before winning a throw-in.
Coventry City are happy to let them have the ball.
Bristol City 0-0 Fulham
Blustery day in Bristol and there aren't too many fans at Ashton Gate. Neither side have really been able to get the ball down in the opening minutes.
Millwall v Crystal Palace (12:45 GMT)
Millwall
Millwall manager Gary Rowett to ITV: "I think we’re confident in our team and our own performances particularly at home
"It's a slightly different test, against a team with a lot of energy, who have gone very strong, and have a lot of quality in forward areas.
"A large part of game is how we deal with the out of possession matters, their attacking numbers but also how can we use the wide areas of the pitch and attack ourselves.
"These games you have to relish them. We are excited, we know the test ahead of us."
Four more FA Cup ties are up and running!
Burnley versus Huddersfield, Bristol City against Fulham, Coventry City against Derby and Hartlepool versus Blackpool have all just got under way.
Caolan Boyd-Munce
Not sure there's going to be an upset at Mansfield.
Boro double their lead as Caolan Boyd-Munce finds the net from inside the box.
Too easy for the Championship club at the minute.
Millwall v Crystal Palace (12:45 GMT)
Crystal Palace
Crystal Palace manager Patrick Vieira to ITV: "My best memory is the 1998 FA Cup win. That is when I really discovered what the FA Cup means to the players, the fans and how important it is to win the competition.
"I have big memories of 1998 so that to me is the best one."
On Millwall: "It is a tough London derby. I've been around too long to be surprised by any kind of atmosphere. I'm expecting the worst!"
Mansfield 0-1 Middlesbrough
Boro are playing in their traditional red and white. They've picked up under Chris Wilder and they're made a decent start against tricky League Two opponents. The home fans were making lots of noise before kick-off. Not so much now.
Burnley v Huddersfield (12:30 GMT)
Stephen Warnock
Former England defender on BBC Radio 5 Live
The team that Sean Dyche has been able to field is a very strong team, which should win the game. But they are low on confidence and they need to pick themselves up.
Mansfield 0-1 Middlesbrough
Mansfield respond to conceding early by going close through Stephen Quinn.
He digs out a shot from outside the area and it flashes just wide.
That goal by Uche Ikpeazu though. Absolutely top notch.
Coventry City v Derby County (12:30 GMT)
Coventry boss Mark Robins has made five changes for the visit of Wayne Rooney's Derby.
Fankaty Dabo, Gustavo Hamer, Marttyn Waghorn, Jamie Allen and Jake Clarke-Salter all return from 10th-placed City's 1-0 home defeat by Millwall on 29 December.
Derby boss Rooney keeps the same side that ended their 2-2 comeback draw at Reading on Monday night, meaning a place in the start line-up for their three subs, Colin Kazim-Richards, Ravel Morrison and Festy Ebosele.
Uche Ikpeazu
Uche Ikpeazu fires Middlesbrough in front against Mansfield
Pick that one out!
The first goal of today's 21 ties comes courtesy of a blockbuster from Uche Ikpeazu.
The Boro man bustles past a couple of Mansfield defenders before finding the top corner from outside the box.
Terrific goal.
Mansfield 0-0 Middlesbrough
Encouraging start by the League Two hosts in the wet and windy conditions.
Keeper Nathan Bishop, who is on loan from Manchester United, has just come sliding out of his area to make a clearance.
Mansfield 0-0 Middlesbrough
Away we go in the first of today's 21 ties.
Another four to start in 15 minutes.
Right. Everybody ready? We're about to see some action.
Jermaine Beckford
Ex-Leeds, Leicester and Everton striker on Football Focus
On what the FA Cup third round means to lower league clubs: "It's the magic. It’s the opportunity to play against the biggest teams in football, to rub shoulders with international player. It's a huge opportunity for those players who haven’t necessarily been as fortunate to play against those teams week in and week out. They can see how they get on today."
Boreham Wood v AFC Wimbledon (15:00 GMT)
Mark Lawrenson
BBC football expert
I'm predicting an upset.
Boreham Wood are 10 games unbeaten in all competitions and fourth in the National League.
Their manager, Luke Garrard, was a fans' favourite when he played for AFC Wimbledon as they rose up through non-league so this was a great draw for him.
Whoever gets through will be hoping for one of the big boys next.