Aberdeen defeated Dumbarton 2-0 at Pittodrie in Group A of the Premier Sports Cup while Raith Rovers began their campaign with a 6-0 victory over Peterhead at Stark's Park.
Partick Thistle are top of Group B following their 1-1 draw with Kilmarnock at Rugby Park. The Jags picked up the bonus point with a 5-4 win in the shoot-out.
SPFL newcomers Bonnyrigg Rose Athletic made a winning start in Group D, beating Clyde 2-1 at New Douglas Park.
Arbroath are in pole position in Group E after seeing off Cowdenbeath 3-0 at Gayfield.
