Sunderland's reliable goal poacher Asamoah Gyan is a doubt for their English Premier League trip to Liverpool this Saturday.
Gyan scored on Tuesday night in the Black Cats 1-2 home defeat to West Ham to crash out of the Carling Cup but limped out on the hour mark.
The Ghana forward who has netted two goals in three matches suffered knocks to his ribs and hurt his hamstring last night.
"The most upsetting thing of the evening is that we have two or three players with soft tissue injuries and they're struggling for Saturday," Sunderland manager Bruce said.
"Kieran's done his hamstring and we'll see how bad it is. Ferdinand has a hamstring too. Gyan got a knock to his ribs and has hurt his hamstring. It's very disappointing."
Gyan has struggled to gain full fitness since signing for Sunderland late last month.