Chelsea make the trip to The Hawthorns on the back of a 1-0 victory over Manchester United, but head coach Antonio Conte will know that the Blues must put a run of wins together in order to have a chance of defending their Premier League crown.
West Bromwich Albion
After the club's performance in the 1-0 defeat at Huddersfield Town, many West Brom supporters expected Tony Pulis to be sacked during the international break but the head coach will be in the dugout for the visit of the champions.
Pulis himself has acknowledged that calls for his exit are justified after not registering a league win since the second weekend of the season and recording just 12 points from their last 20 games in the Premier League.
The Baggies' form is befitting of a team who face a fight to remain in the top flight but as it stands, work done earlier in the campaign keeps the West Midlands outfit out of the relegation zone by a point.
There is little doubt that West Brom's upcoming games will decide Pulis's future, with trips to Tottenham Hotspur and Liverpool coming either side of crucial encounters with Crystal Palace and Swansea City.
That schedule leaves the pressure very much on Pulis and his players on Saturday afternoon, but Pulis will take confidence from witnessing his team compete against Manchester City just three weeks ago, despite eventually falling to a 3-2 defeat.
However, West Brom have won just three of their last dozen matches in the Premier League, and that return must improve sooner rather than later if the fans are not to fully turn on their club.
Recent form: LDDLLL
Much has been made of Conte's future at Chelsea, but witnessing his side battle their way to a 1-0 win over United before the international break may just help the Italian turn the corner at Stamford Bridge.
David Luiz is likely to remain on the fringes of the squad this weekend, but the emergence of Andreas Christensen has not left a huge hole at the back, with the Dane now having made an impression against each of Tottenham Hotspur, Manchester City and United.
Saturday's trip to West Brom marks the start of a testing period for Chelsea, with trips to Qarabag and Liverpool also to come in the next seven days, but Conte must find a way of rotating his players while still picking up results which could ultimately make or break their season.
A successful defence of their league crown looks unlikely - even at this stage of the season - but Chelsea must put themselves in position to capitalise on any mistakes from the two Manchester clubs and Spurs if speculation over Conte's longevity in West London is going to disappear.
Recent form: WLLWWW
Recent form (all competitions): DWWWLW
A decision must also be made on the formation, with Pulis potentially reverting to a 4-5-1 rather than using three at the back like at Huddersfield.
Jake Livermore should keep his place in the team, despite playing all but four minutes of England's games with Germany and Brazil.
West Bromwich Albion possible starting lineup:
Foster; Nyom, Evans, Hegazi, Gibbs; Barry, Livermore, Krychowiak; Phillips, Rodriguez, Rondon
Chelsea possible starting lineup:
Courtois; Azpilicueta, Christensen, Cahill; Zappacosta, Kante, Bakayoko, Alonso; Fabregas, Hazard, Morata
Head To Head
Saturday's match will represent the 138th time in which these two teams have squared off in a competitive fixture, with Chelsea winning 60 times in comparison to 42 successes for the Baggies.
Chelsea have won four of the last half-a-dozen meetings, although the biggest margin of victory has been 2-0, and West Brom have previously enjoyed success against the West Londoners at The Hawthorns.
Since 2012, the Baggies have claimed three wins and a draw, with Chelsea only ever prevailing by a one-goal margin.
We say: West Bromwich Albion 1-2 Chelsea
Chelsea have already slipped up to one struggling side this season with Crystal Palace running out winners at the start of October, but we are backing the Blues to battle their way to three precious points at the ground where they won the Premier League title last season.