ALBION face an anxious wait to learn the severity of a trio of injuries suffered in the 1-0 defeat to Southampton at St Mary's Stadium.
The Baggies disappointment at losing out to an 85th-minute Sofiane Boufal goal was compounded by injuries which saw captain Jonny Evans, Gareth Barry and Craig Dawson all leave the action.
All three will be scanned in the coming days, with head coach Tony Pulis admitting his biggest worry focused on defender Dawson.
The versatile defender, who started at right-back but then switched to central defence midway through the first half when Evans limped off, has a knee injury.
"Craig's problem is the one that concerns me most," said Pulis.
"His knee was locked but we're not sure whether that's from a kick or something muscular.
"We know for sure that Craig wouldn't come off unless he was in trouble.
"Jonny felt his groin but hopefully that will not prove too serious and we have got to it in time."
Midfielder Barry reported a slight back strain at half-time and Albion took the precautionary measure of withdrawing him from the ation early in the second half as he continued to suffer some discomfort.
Pulis added: "We were a bit worried that might be connected to a hamstring issue and so it was best for Gareth to come off.
"I've been at the club nearly three years and it's seemed like we've rarely had an injury but now we've got these problems and also Oliver (Burke), Mozza and Hal (Robson-Kanu) back at home as well."