Berahino with long-range strike
Fabregas red after he kicks ball into Brunt
Berahino pen after Terry fouls him
Brunt with low strike from tight angle
Gregory Mandapat: Sunderland will need to get a result against Arsenal because Jose and Chelsea will be out for blood after this poor display...
Sunderland play Arsenal on Wednesday.
West Brom have scored with both their shots on target in the second half...
James Morrison is replaced by Chris Baird in midfield for the Baggies.
Both sets of fans still enjoying themselves. Chelsea won't let this result spoil their title celebrations. Both teams waiting for the final whistle.
Nemanja Matic's cross from the bye line is deflected into the hands of goalkeeper Boaz Myhill. Into the last six minutes and there will surely no great escape here?
A desperate lunge from Juan Cuadrado on Joleon Lescott. A simple decision to show him the yellow card.
West Brom are cantering to a win against the champions.
Duncan, Richmond: There's only one acquisition Abramovic needs to make in the summer to turn Chelsea into a European powerhouse...not Messi not Ronaldo, not Bale.....T Pulis!
Image source, PAFor all the possession, Chelsea have had just three second-half shots.
Image source, ReutersHere comes 18-year-old forward Izzy Brown for his first-team Chelsea debut.
Brown signed from West Brom in 2013, after becoming the second youngest Premier League player, when he appeared for the Baggies aged just 16. He is jeered by the home fans.
Striker Brown Ideye replaces two-goal Saido Berahino. No hat-trick for him.
You can now make your predictions for the final 11 matches of the Premier League season on the BBC Sport Predictor game.
Will you be predicting that Hull City, Newcastle United or Sunderland will be relegated?
Jonas Olsson nutmegs Nathan Ake as West Brom show boat.
Chelsea get the ball back but Eden Hazard shoots over from the edge of the penalty area.
Image source, OptaChelsea's 19-year-old midfielder Ruben Loftus-Cheek can be pretty pleased with his efforts. He had 86 touches, the third most of any Chelsea player, with a passing accuracy of 92 per cent.
Saido Berahino almost makes things worse for Chelsea as he blazes over from 20 yards.
Kevin Kilbane
BBC Radio 5 live
"Boaz Myhill has made a brilliant save there - he has had to react quickly. He did very well to get himself back across goal to make the save."
Midfielder Ruben Loftus-Cheek is replaced by fellow youngster Nathan Ake.
From the corner, Nemanja Matic looks certain to score as the ball is flicked on to him in front of goal but his volley is brilliantly kept out by Boaz Myhill from point-blank range.
It just isn't Chelsea's day.
It will take some effort for Chelsea to recover from this.
The Blues have lost all of the 31 Premier League games in which they've trailed by three or more goals.
Jose Mourinho's only Premier defeat by three goals was against Middlesbrough in Feb 2006.
Chelsea are still pressing but without much threat. They do have a corner though...
No one can claim Chelsea haven't been bothered this evening.
They look absolutely furious at this score line. Tony Pulis and West Brom have just done a job on them. Sit deep, defend well and hit them on the break. Simple.
James Roberts: Good case to be made for this Chelsea team being the worst champions in premier league history.
Richard Ness: Can you add West Brom to the 'Most likely to challenge Chelsea to the title next season' sidebar poll please?
Steve Howes: Not particularly happy but I would be very unhappy if we hadnt already comfortably won the league. #doesntmatteranymore
Aman Sheth: Loftus-Cheek the only player even trying. Best player by a mile.
Graeme Hunt: Thanks very much West Brom. All you've done is make Chelsea angry for the weekend. Graeme, Sunderland fan.
Shohidur Rahman: And to think people thought Courtois was better than De Gea. Please...........
Eyobel gomini: My money was on Chelsea for the first time this season, they let me down BiG Time!
West Brom midfielder Darren Fletcher is enjoying himself in the centre of midfield this evening. The type of player Manchester United could do with?
Image source, optaDiego Costa can rarely have had a more frustrating evening.
Image source, Getty ImagesThat is a surprise. Diego Costa leaves the field to be replaced by midfielder Juan Cuadrado. Lioc Remy will be pushed further forward now.
Costa hasn't played since April and must be feeling it.