Right. That's it from us here. There will be plenty of reaction and analysis in our match report here.
But there's two games about to get going.
Jose Mourinho is at his cryptic best. This was his answer when asked about John Terry's sending off.
I prefer to have no views. I prefer to try to keep quiet. I know many people are disappointed with this result - people love Chelsea to lose again. I'm so happy the players got what they deserve. Five points in three matches is not enough. The feeling is we are fighting against a lot. But today we won.
Pedro had 56 touches during that game, and as you can see, he likes to mix up his position.
I see betting agencies are already giving out odds on whether John Terry will last the season with Chelsea. Expected, or overreaction?
Talk about doing it the hard way. Chelsea fans up and down the land breathe a collective sigh of relief.
One last ball into the mixer from Claudio Yacob. Thibaut Courtois is underneath it.
Chelsea survive. Just.
Rickie Lambert knocks down Chris Brunt's cross and Salomon Rondon hits a shot from close range against Courtois. Jonas Olsson heads over the corner.
Hazard is a joy to watch. He keeps the ball in the corner, not with strong hold-up play, but with turns and tricks and composure. Lovely stuff.
Clever from Hazard. Sloppy from Gnabry, who gives away a silly free-kick on the Belgian and Chelsea can eat up time.
There will be five minutes of injury time.
Chris Brunt! So close. Cutting in from the right he swings a right boot and it angles over the bar.
James Morrison, the scorer of both of West Brom's goals in this game and this season, is replaced by Craig Gardner.
Serge Gnabry wriggles into space outside the area, but his shot is tame.
Eden Hazard takes out two defenders by shifting one way and then another before flashing wide.
Bye bye Pedro. It's been a blast. That's a pretty smart debut from the Spaniard.
Mikel is on in his stead. It might be a slightly less flourishing performance from the midfielder.
Watford make one change from their draw with West Brom last time out as defender Jose Holebas comes in for Miguel Layun.
Watford XI: Gomes, Nyom, Prodl, Cathcart, Holebas, Capoue, Behrami, Anya, Ighalo, Jurado, Deeney.
Southampton make two changes from their midweek Europa League outing as defender Cedric Soares and midfielder Steven Davis replace James Ward-Prowse and Jay Rodriguez.
Southampton XI: Stekelenburg, Yoshida, Fonte, Caulker, Targett, Wanyama, Romeu, Cedric Soares, Mane, Steven Davis, Pelle.
Serge Gnabry gets it back from a short corner, marches into the area, and puts it into row Z. Frustrating.
Pedro, a player who Manchester United fans wanted, pulls across for Falcao, a player United fans are less fussed about, and the striker scuffs wide.
Joey means "spot on", obviously.
Diego Costa could have finished it all off here. He turns two Albion defenders inside out but puts a nine iron under the ball and clips it well over.
That's it for Costa, who is replaced by Radamel Falcao. Callum McManaman goes off for West Brom, with Serge Gnabry on for his debut.
Chelsea prod away at West Brom, but can't make anything.
And then Albion nudge away on the edge of the Chelsea area, before a Craig Dawson shot is deflected wide. Chris Brunt's corner is claimed by Thibaut Courtois.
Rickie Lambert, on for James McClean, feeds Callum McManaman into the left channel of the area. He cuts back and curls his shot just wide of the post.
Other than that, Chelsea are successfully slowing the pace.
Curious one this. Ivanovic wants to take the throw-in, as being as he's on the touchline receiving treatment anyway. Mark Clattenburg says "sorry sunshine", as he's not let him back on yet. Ivanovic then comes on immediately after the throw-in. It's a waste of everyone's time.
Callum McManaman has a yellow card for kicking the ball away. Silly boy.
Salomon Rondon gets a sniff from a West Brom corner, clipping just wide from the edge of the area.
We'll have a brief break while Branislav Ivanovic gets a blow to the head looked at.
Looking at the John Terry sending off again, it's unlikely Salomon Rondon would have beaten Thibaut Courtois to the ball. The Chelsea keeper was able to casually pick it up. Plenty of tugging from Terry though.
Gary Cahill has his mask on to protect a broken nose. Chelsea need a superhero performance from the defender.
There's life in Chelsea.
Pedro sizzles a ball across goal and Costa does well to keep his first-time shot down but it's into the side netting.
We really have a game now.
Callum McManaman swings a tasty left-wing cross and James Morrison somehow flicks it off the back of his head and sends it into the far corner.
Ten-man Chelsea are on the ropes.
A reshuffle for Chelsea as Gary Cahill is on for Willian.
John Terry really, really did not want to go off. He spent ages arguing with the referee. Then he took off his shinpads. Then he finally left the field.
Meanwhile, Nemanja Matic hits a decent free-kick which Boaz Myhill palms away.
Rondon's free-kick from just outside the area hits the wall and goes over. From the corner Chris Brunt gets the ball 20 yards out, but his shot squeezes through to the keeper.
What a terrible week for John Terry. He's in a foot race with Salomon Rondon. The Venezuelan is winning hands down. There's a bit of a tug from Terry, who is the last man, and Rondon hits the ground. Mark Clattenburg produces a red card. It was just outside the area.
Talking about calming down, Costa and Claudio Yacob are getting in each other's faces. A little bit of rutting going on, but both men escape punishment.
James McClean, already on a booking, needs to be careful. He's having strong words with the referee after giving away a free-kick. Settle down James.
If I'm only paying half-attention, and I squint a bit, it sometimes looks like an in-his-pomp Joe Cole when Pedro is on the ball. Like I say, only sometimes.
No danger from that though. Darren Fletcher tries to launch a long ball to Salomon Rondon but it's way too ambitious.
Weather update. It's wet. Really wet.
Chris Brunt has won West Brom a corner.