Murray Davidson’s knee injury is a worry, St Johnstone boss Tommy Wright has admitted.
The Perth midfielder is due to be sent for an x-ray to get it assessed.
A stretch in the match against Hamilton on Saturday caused the former Livingston man to miss the second half, and until the specialists have concluded their tests it’s a case of wait and see.
“Murray will get an x-ray because we’re a bit concerned,” Wright reported.
“He’s been able to bend his knee so that’s hopefully a good sign.
“His knee locked momentarily and he was in a bit of discomfort.
“It’s his same knee as before but it’s nothing to do with the injury he had.”
Meanwhile, Saints head north to face a Ross County side full of confidence.
But Wright’s men have a 100% record against the Staggies that, if it is protected tonight, will clinch their top six place.
He commented: “Ross County are the form team in the league at the moment.
“They are playing with a lot of confidence and energy. They work extremely hard and have turned things around there.
“We will have to start the game well, better than we did against Hamilton.
“A win would get us into the top six.
“We have beaten them three times this season. They are a different proposition now but I think we are too.”