Derby are working hard to get Craig Bryson and Gareth Roberts fit for the visit of Leeds at the weekend.
Both players missed the 4-1 defeat by east midlands rivals Leicester at the King Power Stadium on Saturday evening.
Bryson was absent with a knee injury sustained in the home draw with Cardiff, while Roberts limped off in the same game with a calf problem.
It was only the second match Bryson has missed this season. The Scottish midfielder sat out the 3-0 npower Championship defeat at Peterborough in October.
"He will do everything he can and we will do everything we can to get him right for Leeds," said Rams manager Nigel Clough after the Leicester loss.
"We miss him when he doesn't play. We miss his energy, his closing down and him getting a tackle in. He has missed two games, against Leicester and Peterborough, and we have lost them both by a three-goal margin."
Roberts is less likely to make it in time for the Leeds game. The 34-year-old's left-back slot against Leicester was filled by James O'Connor.
Clough added: "We missed Craig Bryson but I thought we missed Gareth Roberts more, and we'll have to see what happens this week.
"Jimmy O'Connor struggled at times at left-back. Right-back or centre-half is Jimmy's position, so we were asking him to play out of position."