St Johnstone should know the extent of Murray Davidson’s knee injury by the end of the day.
The 27-year-old has been assessed by specialists after his knee locked in last weekend’s game at Hamilton.
And the results should be known within the next 24 hours.
Manager Tommy Wright reported: “Murray has been for an x-ray on his knee and we’re waiting to hear the results.
“We’re hoping it’s nothing too serious.”
Meanwhile, after Saints’ midweek defeat to Ross County they now face a shpw-down with Dundee to secure their top six place.
And Wright is hoping for a big turnout from Perth supporters.
He said: “The Ross County result was disappointing because we didn’t pass the ball as well as we normally can.
“Getting into the top six has been our aim this season and it has come down to the last game before the split now.
“It’s a game against our local rivals so there should be a good crowd and we’re hoping to get the job done.”