Kilmarnock manager Kenny Shiels believes he will struggle to field a competitive side for the weekend trip to Dingwall.
Jeroen Tesselaar went off injured in
Tuesday's 2-1 Scottish Communities League Cup defeat by Stenhousemuir,
adding to Shiels' problems.
"That's the downside to football - the highs and the lows," said Shiels.
"God knows how I'm going to put a side out for Saturday now with the injuries we have, but that's the challenge."
Second Division part-timers Stenhousemuir produced the shock of the round in Tuesday's ties, with Kilmarnock - the holders - dumped out.
Tesselaar lasted just 14 minutes before being taken off with a hamstring injury, joining keeper Cammy Bell, Paul Heffernan and Garry Hay on the injury list ahead of Saturday's encounter with Ross County.
Brown Ferguson fired Stenny ahead just four minutes later and John Gemmell headed in a second two minutes before the break.
Killie pressed forward after the break and Michael Nelson added a late consolation, but Shiels was keen to give the part-time side praise for their victory.
"If you look at what happened on Saturday when we were fantastic against Dundee United, we didn't get much credit and it was all about how poor they were so I don't want to come across that way and talk about how poor we were," said Shiels.
"I'd rather give credit to Stenhousemuir rather than talk about some of the faults in our play.
"They came here and played really well, were 2-0 up at half-time and it should have been more, and they were better than us and we're disappointed with the outcome."