The Baggies held a two-goal lead at one stage of the game, before falling to defeat to Everton courtesy of an 84th minute Romelu Lukaku winner.
The performance was extremely unlike one put in by a Tony Pulis side, and losing the lead to drop all three points leaves the Baggies in 15th place, sitting on eight points from seven games.
The Midlands side started well, with Saido Berahino opening the scoring towards the end of the first-half, before Craig Dawson netted the second with a powerful header from a corner.
They never looked particularly troubled in that first-half either, but a tactical change by Pulis altered that in the second period.
James Chester came onto the field of play midway through the first-half for the injured Jonas Olsson, and struggled with the pace of the game in the centre-back position.
However, at half-time Pulis decided to push Chester to right-back, bringing Dawson into the central position, and this is when the former Hull City man really struggled.
It is clear that Chester is no way close to being a top level full-back, and whilst he made little impact at centre-half, the 26-year-old actively gifted Everton chances from right-back.
Following the ending of the game, West Brom fans took to Twitter to criticise both Pulis and Chester, claiming the manager should have kept him at centre-back, whilst believing Chester does not have the required ability for the Premier League.
Chester didn't play well but tbf to him he got moved to RB for no reason. #wba— Jamie Payne (@jamiewba96) September 29, 2015
Finally home 2 hrs to go over game. Olsson - tough luck, Chester can't head a ball. Gardner wtf. Pace killed us, God help us at Palace #wba— Richard Bradley (@R_Bradley_WBA) September 28, 2015
Chester's (non)defending for their first goal is utterly devastating. Lazy, careless, naive. Very ugly with severe consequences #wba— Ryan Hunt (@dudleydrinker) September 28, 2015
Pulis blaming errors but what of his at half time swapping Dawson/Chester around? Ultimately cost us #wba— Iain Bate (@iainbate) September 28, 2015
Our defence went to pieces when Dawson came to centre half and Chester was moved to right back #WBA— Chris Woodward (@ChrisWoodward93) September 28, 2015
James Chester. What's the point in him? Why did we sign him? #wba— Adam Townsend (@Adam_Townsend) September 28, 2015
A example of a player playing with zero confidence= James Chester!!! The kid looks scared to get near the ball #wba— craig love (@craigylove81) September 28, 2015