Tuesday August 30
Annan Athletic v Aberdeen (7.45pm)
Dundee v Falkirk (7.45pm)
Partick Thistle v Arbroath (7.45pm)
Rangers v Queen of the South (Premier Sports, 7.45pm)
Wednesday August 31
Heart of Midlothian v Kilmarnock (7.45pm)
Livingston v Dundee United (7.45pm)
Motherwell v Inverness Caledonian Thistle (7.45pm)
Ross County v Celtic (Premier Sports, 7.45pm)
In the event of a draw
In the event of a draw after normal time, extra time of 30 minutes (i.e. 15 minutes each way) will take place and thereafter, if necessary, kicks from the penalty mark.
Quarter-final draw
The draw for the quarter-finals will be made at the Global Energy Stadium on Wednesday August 31, live on Premier Sports following their coverage of Ross County v Celtic.
Dates for future rounds
Quarter-finals – Midweek of October 18-20
Semi-finals – Weekend of January 14/15
Final – Sunday February 26