Rovers saw midfield duo Peter Whittingham and Corry Evans replaced early in the win at Peterborough United, but boss Tony Mowbray doesn't think the pair will be out long-term.
Whittingham was first to be substituted in the first half, with Evans coming on as his replacement at the ABAX Stadium.
But he too had to come off after going in for a 50-50 challenge just before the break.
The Northern Irishman couldn't play the second half, but Mowbray admits both injuries aren't as bad as first feared.
"Peter's calf is sore. He pulled it when running with an opponent," Mowbray revealed after the game.
"Corry has a horrific gash on his knee. He's had six or seven stitches in there to sort it out.
"I'm hoping they won't be out too long and they're back quickly. Injuries are part and parcel of the game, unfortunately."
Afterwards, Tony told reporters that he doesn't expect either to play in the FA Cup replay at Crewe Alexandra on Tuesday evening.