Barclays Premier League
Referee: Mark Clattenburg (Tyne and Wear)
90min - The fourth official has indicated one minute of added time.
89min - Fagan is booked for a late challenge on Neill.
88min - Pantsil clears the Derby danger. It has been a strong defensive display although the attackers will take much of the plaudits today.
85min - Solano whips in a dangerous free-kick but this time it goes through to Bywater.
82min - If it stays like this, the win will equal the club's record margin of victory away from home in the top flight. West Ham United beat Manchester City 6-1 away in September 1962. The last time the team won 5-0 was at home in the Championship against Plymouth Argyle in February 2005.
78min - Earnshaw sends a free-kick high and wide despite being well placed on the edge of the area.
77min - Green saves after Mears tricks his way into the box and unleashes a low shot.
75min - Cole flashes a shot wide. Miller is coming off to be replaced by Craig Fagan.
72min - Bowyer is coming off after a fantastic display that saw him score two and make another. James Collins enters the fray.
69min - GOAL - Solano scores with a sublime free-kick. Bywater never moved. What a goal from the Peruvian!
67min - The Hammers fans are having a great time and have not stopped singing this half.
64min - Corner to West Ham United after Howard's header goes behind.
62min - Cole has led the line well once again for West Ham United. The fans are cheering every pass of the ball and singing "we want five". They might just get it too.
60min - GOAL - Bowyer gets a second after a fantastic one-two between Solano and Cole finished with a ball into the centre. Bowyer strode on to the ball and smashed it into the net.
59min - Fine defensive play from Pantsil clears the danger. Derby are making another change with Lewis coming off to be replaced by Robert Earnshaw.
56min - Mears has a go from long distance but it was never troubling Green.
54min - GOAL - Spector scores after more pressure from the visitors. After Neill headed into the box, the American's shot was blocked on the line by Lewis but trickled over the line.
52min - A Derby change. Imposing forward Steve Howard is coming on for Teale. Derby have to go for it.
51min - GOAL - Etherington gets a second for the visitors. Lovely build-up play between him and Bowyer ended up with the scorer of the first squaring the ball sideways in front of goal for his team-mate to score with a low shot.
50min - A tremendous chance for Derby to equalise. Lewis's chipped ball into the box is met by the unmarked Miller but he puts his header well wide of Green's goal.
47min - Upson hits the bar with a rasping shot from Solano's corner. Neill then has a fine effort blocked. West Ham United have made a flying start.
47min - Boa Morte nearly gets a second after great work by Cole gives him a shooting chance from close range. Bywater does well though and the ball is cleared for a corner.
46min - Boa Morte gets the second half action under way.
45min - The away side are pushing the most as the first half draws to a close. There goes the whistle.
45min - There will be three minutes added. Teale wins another corner off Neil. Lewis takes but yet again Green rises highest to catch.
45min - Bowyer tries to work another opening in the penalty area. However, his shot is blocked and Derby try and counter again.
43min - Derby go on the attack for an equaliser. Mears crosses into the box but Green claims with ease.
42min - GOAL - Bowyer scores a great team goal. It was a fine ball forward by Solano to the back post and Cole knocked it down for the on-rushing Bowyer to tuck under Bywater.
40min - Neill concedes a corner after bright Derby play along the right. Lewis comes across to take it. His corner is too deep though and goes straight out for a goal-kick.
38min - Barnes wins the ball off Boa Morte. When the ball eventually reaches Miller in the area, Gabbidon is able to clear the danger.
35min - The free-kick comes to nothing and Green releases Etherington. The move breaks down as does the swift Derby counter.
34min - Bowyer fouls Barnes as he was racing through the middle. Yellow card as there were still a few defenders blocking the route to goal. That is Bowyer's fifth yellow card of the campaign.
32min - Just when Miller thought he was going to get a shot away, Upson flings himself at the ball and blocks. Derby attack again...Teale finds some room on the right but the move breaks down.
31min - Solano takes it right-footed and sees his shot crash against the bar. Bywater was beaten but the ball runs to safety.
30min - Solano threads the ball through to Boa Morte. Derby concede a free-kick on the edge of their area in a central position.
29min - Cole tricks his way past two midfielders, deceives another defender but the referee then spots an infringement. Derby free-kick in their own area.
28min - Upson is proving unstoppable. He surges forward after intercepting another Derby break. The counter falls away though and the ball runs through to Bywater.
26min - Another stoppage in play. This time Barnes is having a knock to his head treated.
24min - Etherington returns. Miller is about to get a shot away when Gabbidon clears brilliantly. Pantsil is booked for a strong challenge on Andy Griffin.
22min - Etherington is down after a Derby challenge. He has been getting treatment for some time. Ljungberg is warming up.
20min - Cole has Stephen Bywater stretching full length to save after an outstanding break with Boa Morte. The Portuguese forward openeed up the Derby defence. Neill meets the resulting corner with his head but cannot get any power on it.
18min - Boa Morte finishes off a fairly decent attacking foray with a lofted shot but he cannot keep it on target.
17min - Good play by Pantsil and Boa Morte gets the ball through to Cole but he is unable to retain possession.
15min - McCartney does not look comfortable. He is signalling that he might need to come off. John Pantsil is coming on as substitute. He has gone to right-back with Lucas Neill switching to the left.
12min - Giles Barnes storms through the centre but Matthew Upson does brilliantly to dispossess the talented youngster.
11min - Pearson nearly gets round the back to a deep cross but the ball just runs out of play. Green will clear.
9min - McCartney slips on the wet turf allowing Teale to cross but Upson clears for a corner. Gabbidon and Bowyer get the ball away.
7min - The visitors look dangerous with Boa Morte and Cole combining to free Etherington on the left. His pass to McCartney though is short and Derby can again get the ball to safety.
6min - Nolberto Solano sets free Luis Boa Morte who then finds Spector bursting through the middle. The American international cannot get a decent shot away though and Derby clear the danger.
5min - Matt Oakley fouls Lee Bowyer in midfield. The referee is having an early word.
2min - Lee Bowyer and Jonathan Spector are the central midfield pairing. Nolberto Solano and Matthew Etherington are on the right and left flanks respectively with Luis Boa Morte supporting Carlton Cole. George McCartney is down after an early foul. He appears to have a knock to his right foot.
1min - We are under way. Kenny Miller and Stephen Pearson start proceedings.
2.55pm - The fans are now singing Come on you Irons...the teams are led out by Lucas Neill and Derby captain Matt Oakley.
2.47pm - Only James Collins remains. The Wales defender is back in the matchday 16 and he is the last to leave the pitch - Bubbles rings out around the ground. As usual the travelling fans from east London are in good voice.
2.42pm - The teams are both warming up. Light rain is falling. A sizeable away contingent are already making plenty of noise.
2.08pm - Out come the Hammers goalkeepers to warm up - the biggest cheer from the away end is for goalkeeping coach Ludek Miklosko. A chant of "Ludo, Ludo" rings out.
2.03pm - The teams are in and there is a welcome return on the bench for Freddie Ljungberg and James Collins after injury. Both players are on the bench while Jonathan Spector comes into midfield to replace the sidelined Hayden Mullins.
1.56pm - Stephen Bywater, the former West Ham United goalkeeper, is featured heavily in today's match programme. "I had a great time at West Ham but the fact is that people move on," he said. "There will be a few people knocking around who I know well and will of course say hello to because they are a great set of lads."
1.42pm - Welcome to a chilly Pride Park as West Ham United bid to make it five games unbeaten in all competitions. Matthew Upson is the first of the players to appear, with the central defender taking a solitary walk on to the pitch, which is being watered in places despite the threat of rain.
Derby County: Bywater, Mears, Edworthy, Moore, Griffin, Teale (Howard 52), Barnes, Oakley (c), Lewis (Earnshaw 59), Pearson, Miller (Fagan 75)
Subs: McEveley, Jones
West Ham United: Green, Neill (c), Gabbidon, Upson, McCartney (Pantsil 15), Bowyer (Collins 72), Spector, Solano, Etherington, Boa Morte, Cole
Subs not used: Wright, Ljungberg, Camara