Dundee United v Falkirk
It's fourth against second as Dundee United host fellow challengers Falkirk at Tannadice on Saturday afternoon.
The Tangerines have selection issues going into the meeting with promotion rivals currently four points ahead of them but having played a game more.
Goalkeeper Cammy Bell, midfielder Willo Flood and striker Thomas Mikkelsen are all concerns following last week's 4-2 defeat at Queen of the South.
Neither Bell nor Mikkelsen actually completed the game while Flood also received a knock. Defender Sean Dillon and midfielder Scott Fraser are already out for the season.
"They are doubtful, but there's still time for them to recover and, hopefully, they will," manager Ray McKinnon confirmed to the Dundee Evening Telegraph. "We are a bit short right now because of injuries, so it would be good to have them."
There could be a return at left-back for Jamie Robson after being rested, while teenage midfielder Scott Allardice appears set for a debut.