Sunderland will be without both Jermain Defoe and Seb Larsson for this weekend's trip to Arsenal, Sam Allardyce has confirmed.
Defoe and Larsson both went off injured during last Saturday's victory against Stoke and will miss the clash at the Emirates, as Sunderland look to build on back-to-back wins which have taken them out of the relegation zone.
Striker Defoe has a minor hamstring problem, but could be available for next week's visit of Watford.
The injury to Larsson is more serious, with the Swedish international wearing a protective knee brace for a medial ligament issue.
Larsson has just returned from Barcelona to see a specialist, although the time-scale is uncertain over the extent of the midfielder's lay-off.
Meanwhile, Jack Rodwell will miss this weekend's game as he continues his recovery from a hamstring problem.
Allardyce said today: "Seb's gone to Barcelona for some treatment on his medial ligament. We believe that should speed up the healing process.
"Jermain is recovering particularly well. It seems he has had a good recovery time from this kind of injury.
"It's not as serious as first thought. It looks like Jermain will be alright for next weekend (against Watford).
"And Jack Rodwell should be joining in training tomorrow."