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Artuc Boruc blocks an effort on the line and it's scrambled wide. And the whistle goes - a famous win for Bournemouth.
It's cleared off the line!
Corner to West Ham. The last chance.
And Dan Gosling has a chance to make it 5-3. Keeper Darren Randolph skews a clearance but is able to save Gosling's header.
There's no momentum with West Ham. It doesn't feel like they're going to score.
Bournemouth bring on Adam Smith for Matt Ritchie for the final moments.
Random factlet - I once saw Ritchie booked for shoving a ballboy in a League Two match.
Six extra minutes for a West Ham equaliser.
Can West Ham find one more goal to level this up? A remarkable game although a lot of the goals have been down to defensive errors.
Dimitri Payet plays a ball over the top which Modibo Maiga bursts onto but the goalscorer is offside.
Bournemouth bring off Max Gradel, who has had a hand in a lot of the Cherries' good play. Dan Gosling comes on to replace him.
"Really sloppy defending. When a team goes down to 10 men you just have to keep it tight defensively but Bournemouth were all over the place."
A ridiculous match - it's game on again. Modibo Maiga hasn't been on the pitch long but he gets the ball, runs towards the box and calmly slots home from the edge of the box with keeper Artur Boruc diving the wrong way.
Callum Wilson takes the penalty andscores a hat-trick - unbelievable. Darren Randolph guesses the right way but the striker finds the corner brilliantly with his kick.
Carl Jenkinson is sent off!
Max Gradel goes down in the box under a challenge from Carl Jenkinson - he went down fairly easily.
West Ham's Pedro Obiang comes back on after receiving treatment. The Hammers have used all their substitutions so could do with him being fit.
West Ham won't be too happy to see Pedro Obiang down injured following a aerial clash with Eunan O'Kane. Bournemouth are livid too as they were attacking but the referee called it back.
And Cherries keeper Artur Boruc got booked somewhere in the madness.
West Ham bring on former forgotten striker Modibo Maiga for the third consecutive Premier League game. Diafra Sakho is the man to come off.
Players 'taking on some fluids' to use the football parlance. Some fans don't seem too happy and there's some whistling!
Back under way.
Bournemouth right-back Simon Francis has caused West Ham a lot of problems and his latest cross is past defender James Tomkins but also beats his team-mates too.
Former Charlton player on BBC London 94.9
I think Slaven Bilic thought he'd got an answer out of his players when they came back into it. But I don't think the goalscoring is done. Bournemouth are an attacking side so leave gaps at the back.
Marc Pugh has spent a lot of his career in the Football League but that was a strike of real Premier League quality and Bournemouth lead again.
Max Gradel plays the ball across to the winger, who controls the ball with his left foot, switches it onto his right with Carl Jenkinson having committed himself and curls home past Darren Randolph.
West Ham goalscorer Cheikhou Kouyate gets some treatment after falling awkwardly on his shoulder but I think he'll be OK to play on.
Goalkeeper Darren Randolph keeps West Ham ahead. Max Gradel lays the ball off to Marc Pugh but the Irish keeper stops it with one hand - his second good save of the game.
Former Charlton player on BBC London 94.9
Dimitri Payet is a decent player. He's just not found his way in the game at the moment, the right pocket of space to do what he does. I don't know if that's Bournemouth doing their homework.
James Tomkins plays a ball into the box, Bournemouth seem to panic but they get it clear. I really didn't see this second-half turnaround coming.
West Ham were dreadful in the first half.
Max Gradel shoots from distance but it's wide - that's the first thing I can remember Bournemouth doing in this half so far.
"Cheikhou Kouyate‘s reaction is key here. Artur Boruc makes a good save but Kouyate‘s anticipation is brighter than the Bournemouth defence and he gets there for the goal."
When Slaven Bilic and Julian Dicks tell you off at half-time, you listen to them!
Carl Jenkinson throws the ball to Diafra Sakho, who controls the ball with his back to goal, turns and shoots.
Artur Boruc saves his effort but Cheikhou Kouyate is there to smash home the rebound.
This game has changed entirely as Dimitri Payet has a shot blocked. Charlie Daniels lumps the ball out for a throw-in.
Upton Park is buzzing again.
Bournemouth bring on former Bury, Shrewsbury and Hereford winger Marc Pugh for Josh King, who has a hamstring problem.
Pugh has played in each of the four top divisions.
"It's a definite penalty but Josh King just doesn't need to make a challenge there. With a 2-0 lead you just want to see the game off for 10 minutes after half-time.
"It was a ridiculous challenge from King, he dangles a loose leg. Bournemouth should be long gone."
Jamie Tucker, London: To everyone who suddenly thinks Sam Allardyce is akin to Pep Guardiola, lets remember he won three games out of his last 21 at West Ham. Unlikely he'd have won any of our first three opening games on that sort of form. #InBilicWeTrust
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