Here is that double substitution as Benik Afobe comes on for Harry Arter and Dan Gosling replaces Jack Wilshere.

Joshua King moves back into the hole, with Afobe up top. Twist time for Eddie Howe.

Nice approach play from Bournemouth but West Brom are back and set, forcing Harry Arter to strike from distance - his effort sliding wide.

Image source, PA

Space again for Rondon but the Baggies striker puts in a rare poor touch to allow Bournemouth to mop up.

The Cherries again dominating possession but no way through so far..a couple of changes coming up from Eddie Howe...

Looks likely that the linesman didn't see Chadli's touch for the disallowed goal but Clattenburg did.

The referee then went over and appeared to ask if Chadli would've been offside, had he touched it, and when the linesman confirmed he would've been, the goal was chalked off.

Image source, Reuters

Ryan Fraser has been Bournemouth's best player today as he carves West Brom open down the right and puts in a brilliant cross that just evades two Cherries attackers at the back post.

Nyom shifts to right-back, Brunt to left-back as James McClean comes on for the stricken Dawson.

Image source, Reuters

Image source, Reuters

So West Brom again petrify Bournemouth from the corner, winning the second ball and finding Gareth McAuely, whose looping header bemuses Boruc and hits the top of the crossbar.

West Brom collect it as Brunt crosses in from the right, Craig Dawson gets his head on it - and is clattered by Tyrone Mings for his troubles - as Nacer Chadli gets the last touch in.

But Chadli was offside from Dawson's flick on, with Mark Clattenburg finally deciding in the Cherries' favour after consultation with the linesman.

Dawson then received a few minutes of treatment and is rightly taken off - he was out cold on the floor.

Image source, Reuters

A very, very, very lucky escape for Bournemouth...

Quite a bit happened there...details to follow...

Up the other end, Rondon makes another good run into the channels, forcing Tyrone Mings to cover and concede a corner...

Image source, Getty Images

First booking of the game as Nyom clatters Ryan Fraser, who's teased and tested the left-back all afternoon.

Early opening for West Brom but Steve Cook sticks out a foot to block the ball as Nacer Chadli threatened to run through.

High-risk defending yet again...

We're back underway...

Just seeing some replays of West Brom's second and Boruc's calamity.

It gets worse with every viewing.

I have no clue why he tried to punch it clear like that - he goes with his left-hand, well away from his body and gets such a poor contact the ball spins backwards and rolls down his back straight into McAuley's path.

Woeful.

Bournemouth started well - Joshua King's penalty reward for their early pressure on the hosts but then a familiar tale of defensive disaster followed...

First, Craig Dawson was allowed far too much time and space to shoot - although the Cherries can count themselves unlucky his strike took such a big deflection off Charlie Daniels.

West Brom's second was an abysmal goal to concede though with Artur Boruc attempting to punch a ball right on top of him instead of catching it, then losing track of where it fell as Gareth McAuley fired into an empty net.

Testing times for Eddie Howe, he'll need to find a way of changing things round - Bournemouth look like scoring again, but you'd bet your house they'll concede again as it stands.

Image source, Getty Images

Whew. Belting half that. 

...more jitters from Artur Boruc as Jonny Evans gets free. The Cherries keeper parries at first but desperately clutches on at the second attempt.

A late corner for West Brom, their fourth of the half...can the Cherries hold out?

Two minutes of stoppage time...

Both sides seem to be settling for the status quo at half-time here but I wouldn't rule out more late drama given how we started this half.

More nice passing from Bournemouth sets up Ryan Fraser on the right to curl in a cross that just evades the head of Marc Pugh thanks to a touch away from Gareth McAuley.

Any connection from Pugh would've seen Bournemouth level.