Hibernian closed the gap on leaders Rangers to two points in the Ladbrokes Championship with a 3-1 home win over St Mirren on Saturday.
Liam Henderson and John McGinn had Hibs 2-0 up and Anthony Stokes marked his return to Easter Road with a late third goal after Stevie Mallan had pulled one back.
Falkirk slipped to third spot after being held to a 1-1 draw at Livingston. The Bairns went ahead through Craig Sibbald but Liam Buchanan equalised early in the second half.
Iain Russell's first-half goal earned Queen of the South a 1-0 home victory over bottom club Alloa Athletic and moved them level on points with fourth-placed Raith Rovers, who drew 0-0 with Dumbarton at Stark's Park.
Morton play Rangers at Cappielow on Monday, live on BT Sport at 7.45pm.