Dundee snatched defeat from the jaws of victory as they were made to pay for missing chance after chance against Partick Thistle.
Dundee striker A-Jay Leitch-Smith was left in a state of shock as Dundee left Firhill with nothing.
Dundee’s glamour cup clash with Celtic will go ahead on Wednesday, September 20 and be broadcast live on BT Sport.
Dundee suffered their third successive league loss as they were beaten by Betfred Cup finalists Motherwell at Dens.
Dundee boss Paul Hartley believes the pressure is right on Graeme Murty after being "thrown in at the deep end” by Rangers.
Dundee boss Neil McCann has responded to a prediction made by TV pundit Chris Sutton during the derby win over Dundee United.
Dundee goalkeeper Scott Bain will play no part in the club’s massive match against Kilmarnock.
Dundee frontman A-Jay Leitch-Smith insists Tomas Cerny should not have stayed on the park to save his penalty.
Dundee boss Neil McCann is looking at former Rangers and Aberdeen target Khalid Aucho and ex-Nottingham Forest striker James Demetriou as he bids to ease his selection crisis.
The second Dundee derby of the season will take place at Dens Park a week on Wednesday and be shown live on TV.