The Ladbrokes Premiership play-offs begin on Tuesday night when Dunfermline Athletic host Dundee United, kick-off 7.45pm.
A big crowd is expected at East End Park, with the return leg at Tannadice on Friday. The winners will face Livingston in the semi-finals on Monday and Friday of next week.
Allan Johnston's men are unbeaten in 10 matches since losing to St Mirren in March while Csaba Laszlo's side have won four of their last five matches. United have held the upper hand in this fixture this season, with two wins and two draws.
Also tonight, Stenhousemuir face Queen's Park at Ochilview in the first leg of the Ladbrokes League 1 play-off semi-final. The Warriors finished fourth in Ladbrokes League 2 while the Spiders escaped automatic relegation from League 1 by beating Arbroath on Saturday.