League One's bottom side AFC Wimbledon beat West Ham 4-2
Millwall score injury-time winner to knock Everton out 3-2
Wolves score late goal to avoid shock at Shrewsbury
Newport score late equaliser to take Middlesbrough to replay
Man City, Doncaster, Watford, Swansea & Derby all win
#bbcfacup or text us on 81111 (UK Only)
Anyone packed their FA Cup umbrella?
Image source, Getty ImagesIf you're off to a game, let's see.
If you think you know who's going to win at Wembley, let us know.
Fire away...
Bristol City 2-1 Bolton
Bristol City came from behind to reach the FA Cup fifth round for the first time since 2000-01 with victory over Championship strugglers Bolton.
Niclas Eliasson decided the tie with a sublime individual goal, cutting in from the right before unleashing an effort into the top corner.
Arsenal 1-3 Man Utd
Ole Gunnar Solskjaer won another game, that's what.
It's now eight wins out of eight for the Norwegian. And United are looking ominously good...
Accrington Stanley v Derby County (12:30 GMT)
Accrington Stanley striker Billy Kee has been involved in six goals in his last eight FA Cup games (4 goals, 2 assists), scoring in each of the last two rounds against Cheltenham Town and Ipswich Town.
Image source, Getty ImagesBilly Kee scoring the winner against Ipswich Town in the third round
Accrington v Derby (12:30 GMT)
BBC Radio 5 live
We have full match commentary from Accrington of today's early game.
Join Conor McNamara and Mark Lawrenson from 12:30 GMT, on your wireless, smart speaker, phone, laptop, device...
Press play at the top of the page.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
The early game comes from Accrington, but in total there are 11 FA Cup matches to savour throughout the day.
Set up your day accordingly:
Show of hands please - Thumbs up if you've ever been in the (uncovered) away end at Accrington?
Accrington v Derby (12:30 GMT)
Gary Flintoff
BBC Radio 5 live reporter at the Wham Stadium
Image source, .Moody skies in East Lancashire ahead of the first FA Cup game of the day. What do John Coleman’s Accrington Stanley have in store for Frank Lampard’s Derby County?
Accrington v Derby (12:30 GMT)
Image source, Rex FeaturesA proper away end.
A proper ground.
A proper football club.
A proper FA Cup tie.
A proper Saturday.
Welcome!