FA Cup draw LIVE: Manchester United, Man City, Wrexham and more learn fifth-round fate

38 mins: Derby are controlling possession - they’ve had 52% of it - and the League One side have created the same amount of shots as West Ham (4) though none have trouble Areola.

A West Ham corner comes into the box and almost drops to Michail Antonio. There’s a scramble to get to the ball but Derby manage to boot it clear on the second attempt.

35 mins: Chance! That was almost brilliant from Derby! Craig Forsyth bombs forward down the left wing and gets to a loose ball. He flicks it up to Tom Barhuizen who gets in behind Ben Johnson and plays a first-time pass over to the edge of the box.

James Collins is wide open and shoots on the volley but he effort goes agonisingly wide of the near post. That would have been a barnstormer of a goal if that went in.

32 mins: Nayef Aguerd gives away a clumsy free kick inside his own half and gifts Derby the opportunity to get the ball into the box again.

Hourihane is on set piece duties but his floated ball into the middle is claimed by the confident Alphonse Areola.

29 mins: A switch of play from West Ham’s goalkeeper sees the ball swung over to Ben Johnson on the right wing. He immediately passes the ball up to Jarrod Bowen but Haydon Roberts is onto him in a flash and sends the ball out of play with a fine tackle.

Derby have grown into the game nicely. Paul Warne will be happy with what he’s seeing right now but will be ruing letting in the early goal.

25 mins: Tom Barkhuizen wins a free kick out wide for Derby after enticing Ben Johnson in with a heavy touch to control the ball. Conor Hourihane then floats a long pass into the box from the set piece and manages to find Craig Forsyth.

The defender is being marked and comes under pressure meaning he control his header and it bobbles wide of the back post.

22 mins: Nice play from Korey Smith! He’s given the ball on the right and weaves it into the box by cutting inside from the wing. Smith pokes the ball into the six-yard area but Angelo Ogbonna deals with it.

His clearance comes out to Conor Hourihane who brings the ball down the hooks an ambitious shot high and wide.

19 mins: Derby look determined though. They’ve seen more possession since going behind but there is a sense that West Ham are playing within themselves.

Jason Knight is working hard in the number 10 roll, trying to find a pocket of space to link up the midfield with striker James Collins.

16 mins: Derby need to shoot! Antonio loses the ball and Derby shift it quickly up to Knight who bombs towards goal. He feeds the ball out wide to Barkhuizen who takes it into the box before returning the pass.

Knight rolls the ball onto his right foot but decides not to take a shot. Instead he rolls it back to the front edge but his pass is wayward and West Ham clear.

The home side have been in a few situations like that now and haven’t challenged Alphonse Areola yet.

13 mins: Derby County could find things difficult now. West Ham have the lead and should be able to keep the Rams at bay. The home side will need to score next to stay in this tie.

Max Bird switches the ball out to the right wing where Korey Smith brings it under control. Nathaniel Mendez-Laing receives the ball and drives down the line before whipping a cross over to the far post.

The ball drops over the back of James Collins’ head before the forward gets flagged offside. That’s a good response from Derby to show the Irons that they can pose a threat.

10 mins: West Ham take the lead! Michail Antonio takes a shot from the edge of the box and sees his effort blocked. The Hammers recycle the ball and send it up to Tomas Soucek.

He slides it to Antonio and continues into the box. Antonio completes the one-two before Soucek nods the ball across to Jarrod Bowen who prods it home from inside the six-yard area!

Lovely goal.