The Betfred Cup kicks off this evening, with Arbroath against Dundee United live on BT Sport with a 7.45pm kick-off at Gayfield.
Also in action on Friday night are Airdrieonians and Partick Thistle, who meet at the Excelsior Stadium, while Cove Rangers take on Raith Rovers at Forfar's Station Park.
There are 13 ties on Saturday, including a trip to Montrose for holders Ross County and an all-Premiership encounter between Motherwell and Rangers at Fir Park, live on BT Sport at 3.00pm.
The 40 clubs in the group stage are divided into eight sections of five and fixtures are played across five matchdays, with the group winners and four best runners-up joining Celtic, Aberdeen, Heart of Midlothian and Hibernian in the last 16 on August 9/10.
All drawn games in the group stage of the new-look competition go straight to penalties, with the shoot-out winners receiving two points and the losers one point.