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 frontman A-Jay Leitch-Smith insists Tomas Cerny should not have stayed on the park to save his penalty.
Dundee manager Neil McCann has signed Wigan central defender Jack Hendry on a two-year deal.
Dundee suffered their third successive league loss as they were beaten by Betfred Cup finalists Motherwell at Dens.
Aberdeen celebrated the news that manager Derek McInnes had rejected Rangers by edging past Dundee 1-0 at Dens Park.
Dundee fans will get their first chance to see new signing Jack Hendry in action today.
Sofien Moussa gave Dundee a big derby boost by scoring a hat-trick against Cowdenbeath at Central Park.
Dundee were unable to do a PSG on Celtic as they were well beaten in this Betfred Cup quarter-final at Dens Park.
Dundee 1, Dundee United 1 (United win 4-3 on pens to earn bonus point): Tangerines on the spot to top group
There was derby delight for Dundee United at Dens as they first drew with Dundee then earned the bonus point thanks to a 4-3 penalty shoot-out success.