Partick Thistle won at Dens Park for the second time in a week to progress to the second round of the CIS Insurance Cup at the expense of Dundee.
Billy and Jimmy Gibson were celebrating at Dens Park
Gavin Swankie gave the home side hope of revenge for the league defeat with an early clever header.
But Darren Brady levelled for Thistle just before the interval.
The Glasgow side stepped up a gear and Willie Gibson angling home a smart finish before Scott Boyd headed home for a comfortable victory.
Dundee: Murray, Calum McDonald, Strong, MacKenzie, Dixon, Harris (McNally 62), Rae, Kevin McDonald, Robertson (Campbell 71), Deasley, Swankie.
Subs Not Used: Ferguson, Gates, Hay.
Goal: Swankie 10.
Partick: Arthur, Sives, Ferguson (Hodge 79), Boyd, Brady, Billy Gibson, James Gibson, Roberts, McCulloch, Donnelly, Graham Gibson.
Subs Not Used: Tuffey, Kane, McGoldrick, Strachan.
Booked: James Gibson.
Goals: Brady 40, Billy Gibson 64, Boyd 75.