James McPake will today discover the extent of the injury he suffered in the Dundee derby.
The Dark Blues defender - capped once by Northern Ireland - was carried off with a suspected dislocated knee following a first-half challenge on Dundee United's John Rankin.
After receiving a yellow card for his foul on the Terrors' midfielder, 31-year-old McPake was unable to play any further part in proceedings and was stretchered from the field, with an MRI scan expected to confirm a lengthy spell on the sidelines later today.
United took the lead through Blair Spittal's resulting free-kick but Mixu Paatelainen's men - anchored 11 points from safety at the bottom of the Premiership - would eventually go down 2-1 thanks to goals from Dundee duo Kane Hemmings and Nick Ross ahead of the visitors' Guy Demel seeing red after collecting two yellow cards.
"We should have been two, 3-0 up at half-time," said Paatelainen.
"Opponents score every week against us. We don't obtain clean sheets. We're not sharp enough.
"We can talk about luck, Dundee rode their luck against us, they were very lucky with the second goal - very lucky. But you can also say we should have done better with the first goal."