Postpublished at 20:14 British Summer Time 26 October 2016
Manchester United 0-0 Manchester City
Chris Waddle
Former England winger at Old Trafford for 5 live Sport
Iheanacho slipped. That is ridiculous.
Result: Man Utd 1-0 Man City (Mata)
Result: West Ham 2-1 Chelsea
Seats and bottles thrown at London Stadium
Result: Southampton 1-0 Sunderland (Boufal)
Quarter-final draw: Man Utd v West Ham, Liverpool v Leeds, Hull v Newcastle, Arsenal v Southampton
Tom Rostance
Manchester United 0-0 Manchester City
Chris Waddle
Former England winger at Old Trafford for 5 live Sport
Iheanacho slipped. That is ridiculous.
Manchester United 0-0 Manchester City
Kelechi Iheanacho is booked for taking out Daley Blind on halfway - but he clearly slipped! The pitch is very wet and that's five or six men who have already lost their footing.
West Ham 1-0 Chelsea
Nathaniel Chalobah has a piledriver from a long way out, brilliant hit, but Darren Randolph turns it over!
Southampton 0-0 Sunderland
West Ham 1-0 Chelsea
David Pleat
Former Tottenham boss on 5 live Sport
Chelsea are now playing with a bit more confidence. They're just beginning to pass the ball around and Willian is just finding space with the ball. Normally he plays wider on the right but at the moment he's playing more central and I think he's enjoying that.
Manchester United 0-0 Manchester City
The Manchester Evening News' reporter is pretty certain about that one.
Manchester United 0-0 Manchester City
A long, extended song from the City fans about Pep Guardiola rings out around Old Trafford before the home fans respond with a serenade to Jose Mourinho.
Jesus Navas then finds Aleix Garcia inside the area, he goes down under a challenge from Michael Carrick - no penalty given!
West Ham 1-0 Chelsea
Little sign of a Chelsea response since they went behind to that early header. The home fans still in fine voice.
Manchester United 0-0 Manchester City
Chris Waddle
Former England winger at Old Trafford for 5 live Sport
Man United haven't settled. City have come out of the blocks quickly.
City could try and hold onto the ball longer, they are trying to rush it but Man United are just trying to get some possession.
Manchester United 0-0 Manchester City
City having all of the ball so far. The Blues are attacking the Stretford Road end first half.
Southampton 0-0 Sunderland
Closest yet at St Mary's as Southampton's record signing Sofiane Boufal beats a defender easily and drags a low shot just wide from 16 yards out.
Manchester United 0-0 Manchester City
Chris Waddle
Former England winger at Old Trafford for 5 live Sport
Iheanacho has got to score.
What a chance. What a ball in, Ihaenacho is four yards out and dives at it but he has to hit the target.
Manchester United 0-0 Manchester City
A great chance for Manchester City! Jesus Navas beats his man and then finds a team-mate with a cross as well - no, really! - but Kelechi Iheanacho heads powerfully over the top.
A massive chance.
Manchester United 0-0 Manchester City
Under way at Old Trafford...
If you're watching the Bake Off and following the football on your phone, you can join in with this little lot...
West Ham 1-0 Chelsea
David Pleat
Former Tottenham boss on 5 live Sport
Superb cross by Mark Noble but an equally superb header by Cheikhou Kouyate. Asmir Begovic didn't seem to have a chance of getting that ball. It was a right inswinging cross, he was challenged as he met it - I think it was John Terry - but he just got in front of him.
Some early goals across Europe tonight. Bayern Munich captain Philipp Lahm gave his side a second-minute lead against Bavarian rivals Augsburg in the German Cup.
And in Serie A, Juventus are beating Sampdoria 2-0 after eight minutes. Mario Mandzukic and Giorgio Chiellini have both scored headers.
Cheikhou Kouyate (11 mins)
West Ham with the breakthrough! A corner is not cleared, Mark Noble crosses the ball back in and Cheikhou Kouyate meets it with a thumping header, inside the near post.
Manchester United v Manchester City (20:00 BST)
If you're wondering if Wayne Rooney is now not even getting in the Manchester United reserves - he's out tonight with a thigh injury.
West Ham 0-0 Chelsea