What a noise at Mansfield.

The teams are getting ready to come out and there's a terrific atmosphere being whipped up inside the ground.

The ground looks pretty full too. Great support for the League Two club.

Crystal Palace travel to Championship side Millwall without several players including Wilfried Zaha, Cheikhou Kouyate and Jordan Ayew, who are competing at the Africa Cup of Nations.

But Patrick Vieira's side have enjoyed trips to the Den, only losing one of their last five competitive meetings.

Millwall, who have suffered a recent blip in form (losing three of their last five league games) have done relatively well this season and sit 11th in the Championship, just seven points off a play-off place with two games in hand.

They were knocked out of the League Cup by other Premier League opposition - Leicester City - in September, so will hope for a better outcome this time.

It's a huge weekend for League One Morecambe as they get ready to take on eight-time FA Cup winners Tottenham on Sunday.

Spare a thought for Shrimps boss Stephen Robinson, a former Spurs player.

Morecambe have announced today the former Northern Ireland midfielder has tested positive for Covid-19, external and will miss the trip back to his old club.

BBC Radio 5 Live Sports Extra

BBC Radio 5 Live Sports Extra has every kick and cough of Kidderminster Harriers-Reading from 15:00 GMT.

You can bet there will be a reference to the Severn Valley Railway which runs close to Aggborough.

Image source, Getty Images

Coventry City welcome fellow Championship side Derby County, managed by Wayne Rooney, to the Building Society Arena today.

The hosts won the competition in 1987 and manager Mark Robins says "you don't need to convey how important and special" the FA Cup is to the club.

"This club has obviously won it and that’s been probably one of the most talked about occasions in the club’s history. That’s how special it was," he added.

Derby County, winners themselves in 1946, come into it off the back of three wins from their last four league games but they sit bottom of the Championship table, 14 places below Coventry City.

Andy King captains Bristol City as the Robins prepare for an all-Championship clash with Fulham.

Andreas Weimann scored a hat-trick in a 3-2 win over Millwall last time out but is only on the bench.

Fulham's leading marksman Aleksandar Mitrovic doesn't start either, with the Serb having to settle for a place among the substitutes.

This is the first game of 2022 for the Cottagers who lost their way at the back end of last year and haven't won a game since 20 November.

Championship side Millwall make two changes for the visit of south London rivals Crystal Palace to the New Den.

George Long replaces Bartosz Bialkowkis in goal, while Scott Malone comes in for Murray Wallace, whose partner is due to give birth today. Lions playmaker Jed Wallace remains out with a thigh injury.

Millwall XI: Long, McNamara, Malone, Hutchinson, Cooper, Pearce, Ojo, Saville, Mitchell, Bradshaw, Afobe.

Subs: Bialkowski, Kieftenbeld, Smith, Bennett, Evans, Burey, Boateng, Topalloj, Lovelace.

Crystal Palace boss Patrick Vieira promised to name a strong side for the Cup clash and has stuck to that vow, with the majority of his five changes down to players including Wilfried Zaha and Jordan Ayew being away on international duty at the Africa Cup of Nations.

Conor Gallagher returns from injury to start, while goalkeeper Jack Butland, Eberechi Eze, Jean-Philippe Mateta and Michael Olise also come in to the Eagles' line-up.

Crystal Palace XI: Butland, Ward, Guehi, Andersen, Mitchell, Hughes, Schlupp, Gallagher, Eze, Mateta, Olise.

Subs: Matthews, Clyne, Kelly, Riedewald, Milivojevic, Wells-Morrison, Rak-Sakyi, Edouard, Benteke.

Not long until kick-off in the first of today's ties.

Both teams are warming up on the pitch and almost every player is wearing gloves.

It's wet and windy but Mansfield won't mind.

They're flying under Nigel Clough after winning their last five league and cup matches.

Will the League Two club overcome Championship side Middlesbrough?

Always the way, isn't it?

You draw a team in the cup competition and then face them the following week in the league.

Bristol City welcome Fulham this lunchtime but will be making the returning trip next Saturday.

The table would suggest the Cottagers should be heading into the fourth round. They sit third in the Championship table, 15 points and 12 places above today's hosts.

But Marco Silva's side have not recorded a victory since 20 November and Bristol City come into the game off the back of a confidence-boosting 3-2 win over Millwall.

There are 10 Premier League clubs in action today - and at least one is going out.

Holders Leicester City start their defence with an all-Premier League tie with Watford.

Will Burnley struggle at home to Huddersfield without manager Sean Dyche?

Crystal Palace face an awkward London derby at Millwall and Newcastle host League One Cambridge.

Brentford are at League Two Port Vale and Brighton play Graham Potter's old club West Brom.

Chelsea host non-league Chesterfield and Everton are at Championship club Hull City - a match you can watch live on BBC One at 17:30 GMT.

At the same time, Southampton will be hoping to avoid an early exit at Swansea City.

Will Chesterfield fans be making more noise than Chelsea's at Stamford Bridge later?

The non-league club will be backed by 5,800 travelling fans as they look to produce one of the great FA Cup shocks.

Incredible support.

Image source, Getty Images

Burnley haven't won in any competition since October, so will Sean Dyche want to rediscover some momentum in the FA Cup or concentrate on his side's battle against relegation in the Premier League?

Meanwhile, promotion-chasing Huddersfield are unbeaten in six games after another trip to Lancashire last time out saw them draw with Blackburn.

The last time Huddersfield travelled to Burnley in the competition they grabbed a 1-0... although that was in 1972, mind.

Dyche will not be at Turf Moor for the game, he's isolating with Covid, so assistant Ian Woan will instead be in charge of the Clarets for this one.

There are five changes to the Burnley side from the Premier League defeat to Leeds United.

Nick Pope returns in goal. Charlie Taylor, Dwight McNeil, Jack Cork and Johann Berg Gudmundsson are not in the squad.

It's still a fairly strong side with the likes of Chris Wood, Jay Rodriguez and Ben Mee all starting.

Burnley XI: Pope, Lowton, Tarkowski, Mee, Bardsley, Brownhill, Stephens, Westwood, Lennon, Wood, Rodriguez.

Subs: Hennessey, Cork, Thomas, Dodgson, Long, Helm, McGlynn.

Image source, Getty Images

Josh Ruffels and Jon Russell both get their first starts for Huddersfield.

Club Captain Jonathan Hogg returns from injury.

Huddersfield XI: Schofield, Pipa, Pearson, Hogg, Rhodes, Koroma, Ruffels, Sarr, Sinani, Lees, Russell.

Subs: Bilokapic, Toffolo, O'Brien, High, Thomas, Holmes, Turton, Campbell, Ward.

Boreham Wood are enjoying an incredible season - chasing promotion to the Football League and through to the third round of the FA Cup for the second successive season.

This time last year they went out after losing 2-0 to Millwall but boss Luke Garrard will be confident his side can overcome his former club AFC Wimbledon and reach the fourth round for the first time in the club's history.

Boreham Wood chairman Danny Hunter remortgaged his home in 2020 to help the National League club cope with the financial impact of coronavirus.

League Two Hartlepool welcome back former Blackpool striker Mark Cullen as they look to pull off an upset.

Blackpool, 12th in the Championship, have named a strong side with Shayne Lavery and in-form Gary Madine up front.

Image source, Rex Features

Yeovil were a Championship club as recently as 2013-14 but are now in their third season outside the EFL.

When they were a League Two club in 2017-18, they lost 4-0 at home to Manchester United in the fourth round.

But they will be hopeful of giving Championship leaders Bournemouth a sterner test at Huish Park.

Forward Joe Quigley started his career at Bournemouth and will be looking to make an impression against his former club.

Another ex-Bournemouth player at Yeovil is midfielder Matt Worthington, who at the age of 19 came on as a substitute in the Cherries' Premier League match with Leicester in May 2017.

Image source, Rex Features

It's a big day for Rebecca Welch who is set to become the first female referee to take charge of an FA Cup third round match.

She will be in the middle for the Birmingham City- Plymouth Argyle game.

Welch became the first woman to referee an English Football League game in April when Port Vale played Harrogate in League Two.

She was subsequently added to the EFL's national list for men's football.

The 37-year-old also refereed Barrow's 4-0 win at non-league Banbury in the first round of this season's FA Cup.

Mansfield welcome back captain Ollie Clarke and experienced midfielder Stephen Quinn as they make two changes from when they last played on Boxing Day.

Middlesbrough captain Jonny Howson also returns for the Teessiders, who give a debut to midfielder Coalan Boyd-Munce following his move from Birmingham on Friday.

BBC Sport

Image source, Rex Features

BBC iPlayer and BBC Sounds is your go-to destination for 24/7 FA Cup coverage this weekend.

And don't forget every FA Cup goal across the weekend will be available to view on the BBC Sport website and app.

Image source, Chesterfield FC

In 2017 Saidou Khan was playing in the eighth tier of English football for Chipstead and working in a Lidl supermarket in Camden Town.

Today, he steps out at Stamford Bridge to face European champions Chelsea for non-league Chesterfield.

His dad will be very much in his thoughts.

Read his story of loss, determination and never giving up.