Burnley are sweating over the fitness of Brian Jensen and Martin Paterson after they picked up knocks in the defeat to Barnsley.
Both players were forced off during Burnley's 3-2 defeat at Oakwell to add to Owen Coyle's injury worries.
Northern Ireland international Paterson went down in the 15th minute when he appeared to twist his knee, while Danish shot-stopper Jensen could not continue after a collision with Tykes defender Darren Moore.
Coyle, who has already lost virtual ever-present Chris McCann for up to three months with medial knee ligament damage this week, is hopeful neither of last night's casualties have suffered long-term injuries.
"I think truth be told it's probably too early to assess it. Part of it seemed innocuous, I don't even know if anybody got anywhere near him," said Coyle on Paterson.
"It seems to be in the knee area and he's in discomfort. We'll obviously look to get that scanned as early as possible and look to see if there's any lasting damage. It's too early to make any claims on that but it was certainly serious enough to bring him out of the game."
Of Jensen's injury the Clarets boss added: "Brian, I want to say is in a better situation than that, but I can't say for sure.
"He's got a haematoma, a dead leg, when big (Darren) Moore clattered into him and hopefully they'll both be all right but we won't really know until some point today.
"Chris, Brian and Pato have played every game for us and it's certainly not been one of the best nights for us."
One positive for Coyle was the impressive display of Fernando Guerrero.
The tricky Ecuadorian turned in a fine display of the left wing and proved a constant thorn in the side of the Barnsley defence.
Coyle believes the loan signing from Independiente del Valle has the quality to be a massive success in England.
"Fernando, I believe is going to be a top player but he's 19 years of age and his English is limited," added Coyle.
"We have a teacher working with him because it's important he learns the dialect in terms of talking on the pitch and understanding the game so we can make the relevant points to improve him individually and in turn us as a team.
"I think anyone who would have paid the admission money alone would have been delighted with how pleasing he is on the eye.
"That's the type of entertaining players I want at the football club. And if we can harness that and bring it within the team shape then we'll have some very good players on our hands."
Barnsley chief Mark Robins was delighted with the victory and paid tribute to Jon Macken for his performance.
"Burnley paid us a real good compliment because they played the majority of the side that played against Sunderland and beat them at the weekend," said Robins.
"And they made it clear right from the offset that they were going to come and attack us.
"That suited us and I brought Jonathan Macken in tonight and he was fantastic and did everything you need your centre-forward to do to enable you to play.
"If you look at the great goals we have scored, there were some great balls into the box, there's a lot to be pleased with."