West Ham XI: Adrian, Jenkinson, Tomkins, Collins, Cresswell, Noble, Kouyate, Zarate, Payet, Lanzini, Sakho
Chelsea XI: Begovic, Zouma, Cahill, Terry, Azpilicueta, Ramires, Matic, Willian, Fabregas, Hazard, Costa
West Ham 1-1 Chelsea
Clive Allen
BBC Radio 5 live at Upton Park
"It's a clinical finish from Gary Cahill. It's given Chelsea hope they can still go on and win this game. It was character which made them champions - all of sudden it's West Ham on the back foot now."
Gary Cahill (55 mins)
Amazing. Chelsea respond to this latest adversity in stunning style - Kurt Zouma and Gary Cahill both leap in the box to get on the end of a corner and the ball drops for Cahill to leather it past Adrian.
Absolutely no reaction from Jose Mourinho in the stands.
Image source, Reuters#bbcfootball
West Ham 1-0 Chelsea
It is West Ham who have seen more of the ball since the break and they also look more like scoring. Aaron Cresswell has just fired a dangerous ball across the face of goal that Diafra Sakho could not get on the end of.
#bbcfootball
West Ham 1-0 Chelsea
Ian Dennis
BBC Radio 5 live at Upton Park
"I thought Jose Mourinho said he wanted to stay out of the headlines?!"
West Ham 1-0 Chelsea
With Jose Mourinho in the stands and Nemanja Matic back in the dressing room, it is fair to say it is a big ask for Chelsea's 10 men to get something from here.
#bbcfootball
West Ham 1-0 Chelsea
Chelsea made a change at the break, as well as having their manager sent off.
John Mikel Obi is on for Cesc Fabregas, who was booked for his reaction to Nemanja Matic's red card.
West Ham 1-0 Chelsea
The second half is under way. Jose Mourinho is indeed in the stands.
West Ham 1-0 Chelsea
Reports that Jose Mourinho has been sent to the stands too, after referee Jon Moss spoke to him at half-time.
Image source, ReutersWest Ham 1-0 Chelsea
This graphic shows the average position of touches by Chelsea players before the break. They will have to do without number 21, Nemanja Matic, in the second half, and try to find an equaliser too.
We could be in for a very open game...
#bbcfootball
West Ham 1-0 Chelsea
Correction: it was Chelsea's assistant first team coach Silvino Louro, not Christophe Lollichon, who was sent to the stands.
West Ham 1-0 Chelsea
Clive Allen
BBC Radio 5 live at Upton Park
"Payet has been the star performer so far. Every time he gets on the ball it looks like something will happen for West Ham."
#bbcfootball
West Ham 1-0 Chelsea
Clive Allen
BBC Radio 5 live at Upton Park
"It's been a fascinating first half. Chelsea need to calm down at half-time. They have an uphill task in the second half, one goal down and one man down."
#bbcfootball
#bbcfootball
West Ham 1-0 Chelsea
Nemanja Matic's first booking was for a foul on Cheikhou Kouyat after 35 minutes. His second was for a foul on Diafra Sakho after 44 minutes. Not his finest nine minutes for Chelsea, then.