Stoke City have lost Marc Wilson and Matthew Etherington for the relegation run-in.
Wilson limped off with a recurrence of hamstring trouble at QPR, while Etherington is still under treatment for the back problem which has sidelined him for Stoke's last two-and-a-half games.
"Both of them are having intensive treatment and it's a case of keeping everything crossed for them," said boss Tony Pulis.
"They are clearly a concern, and at this stage we don't know when, or if, they will be back."