Sam Allardyce is hopeful that at least one of Sunderland's injured quartet will recover sufficiently to feature in Sunday's trip to Everton.
Ola Toivonen (groin), John O'Shea (hamstring) and Younes Kaboul (calf) all suffered muscle strains in last weekend's Wear-Tyne derby win, while Fabio Borini missed the game entirely due to an ankle problem.
None of the injuries sustained by Toivonen, O'Shea and Kaboul are serious ones, and Borini has had a pain-killing injection in his ankle to improve a problem which had prevented him running.
Allardyce expects to learn more after training today whether any have a chance of featuring in this weekend's clash at Goodison Park, but is keeping his fingers crossed that one or two will be available, with Kaboul and Borini thought to be the most likely to feature.
"We'll know more today, but we have seen improvements in the players," said Allardyce.
"The improvement has been a lot better than what we expected than when the injuries occurred on Sunday.
"There may be a chance that one or two are fit.
"We have to see how Fabio is too, because he ended up with a small injection in his ankle to try to take the last bit of fluid and pain away from there.
"We'll see if he trains today.
"It doesn't give me as much preparation as I'd like to work with the team.
"But we've got to maximise the time we've got between now and Everton to put the shape of the team together.
"When people can't train, it becomes more difficult, but it's the way it is at this moment in time."