Chelsea got the win they needed to return to the top of the Premier League but they were forced to work their socks off to get the three points by a resolute, well-organised West Brom side.
The win makes if nine on the bounce for Chelsea, a mighty impressive twenty-seven points taken out of the twenty-seven available, furthermore, in those nine games the defence has conceded just two goals.
For the fixture this lunch-time Antonio Conte restored the fit-again Nemanja Matic to the midfield with Cesc Fabregas dropping to the bench.
The first-half was a tense affair with the visitors getting as many players behind the ball as they could and frustrating Chelsea. However they weren`t afraid to attack and both Salomon Rondon and Chris Brunt fired wide in the early exchanges.
Chelsea`s only attacks of note came from an N`Golo Kante shot that took a deflection off of Pedro and with Foster beaten it hit the side-netting with the other chance being a free-kick, from thirty yards out, from David Luiz that the keeper saved.
The second half saw much of the same, West Brom frustrating Chelsea with men behind the ball. Conte aware that something had to change introduced Willian and Fabregas and it was a ball from the latter that was to provide Chelsea with the breakthrough.
There seemed no danger when McAuley collected the pass from Fabregas but the persistence of Diego Costa saw the top-scorer in the Premier League win the ball and from an almost impossible position curl the ball into the top-corner of the net, a sublime strike from a striker on top form
The recent sequence of results now reads WWWWWWWWW, now that looks damn good doesn`t it!