Image source, Getty Images

The Baggies have held on. How?

Campbell miss, Cazorla penalty miss, Arsenal left wondering.

But West Brom deserve victory for a tremendous display.

Arsenal have grabbed the kitchen sink. 

There are four minutes of stoppage time here.

Changed his mind over the retake? Hmmm..

Danny Mills
Former England defender on Final Score

"There was a touch of encroachment but when isn't there? Everybody was in the box. It had nothing to do with Santi Cazorla missing, but Mark Clattenburg ordered the retake, then changed his mind. Incredible." 

Image source, Reuters

Remember John Terry slipping for Chelsea at a vital moment? Santi Cazorla just replicated that. What a chance for the Gunners and what a horrible moment for the Spaniard.

Chris Brunt pulls down Alexis Sanchez. Referee Mark Clattenburg points to the spot. Santi Cazorla to take.

Forward Rickie Lambert is on for goalscorer James Morrison.

Garth Crooks
Former Spurs striker on Final Score

"Arsenal are passing West Brom to death but they have to translate that artistry into goals. They are capable of scoring, but have to get the ball into the box more often. All of their best work is coming out of it."  

Image source, Reuters

Hector Bellerin plays in a lovely ball from the right that Alexis Sanchez controls with his thigh, but fails to provide a finishing touch allowing Boaz Myhill to collect. 

Fourteen minutes of the 90 left.

Image source, AFP

Erm... let's sum this up. Jonas Olsson's header bounces off the crossbar, comes down and hits the line or crosses it or...

Anyway, the crowd react thinking referee Mark Clattenburg has awarded a goal, but he hasn't, he has ruled it was offside.

England striker Saido Berahino is on for Venezuela forward Salomon Rondon. 

Joel Campbell, who hasn't really had time to get his boots dirty, miskicks at the far post with the goal at his mercy. Arsenal midfielder Santi Cazorla played the perfect ball in, but the Costa Rica forward got his feet all wrong. His manager Arsene Wenger didn't look to best pleased.

Joel Campbell comes on for Kieran Gibbs. The dice has been thrown.

Stephane Sessegnon comes off and is replaced by the slightly more defensive midfielder Craig Gardner.

Image source, PA

Jonny Evans makes a goal-saving tackle to prevent Arsenal midfielder Mesut Ozil from unleashing an effort after he is brilliantly played in by Alexis Sanchez.

Albion have been terrific on the break. Chris Brunt's cross from the left goes out for a corner. Nothing comes from it, but moments later the ball is flung into the area and keeper Petr Cech scrambles to clear the ball ahead of James McClean.

Image source, PA

There's only one way this traffic is heading. Alexis Sanchez wriggles around his West Brom markers and sets up Kieran Gibbs, whose meaty shot is blocked by Baggies defenders.

Paul Franks
BBC WM commentator

An early free-kick for Arsenal. Mesut Ozil delivers a teasing free-kick which West Brom somehow manage to clear. Arsenal players appeal that Jonas Olsson tugged Olivier Giroud. Hmmm. Then Germany World Cup winner Ozil strikes a low angled shot that comes off the woodwork.

And if that is not enough drama for Gunners, substitute Mikel Arteta is replaced by Mathieu Flamini. Another injury??

Looking forward Arsenal manager Arsene Wenger's to the post-match news conference.