East Fife caused an upset by beating Dundee United 2-0 at Tannadice while Hearts play Stenhousemuir at Tynecastle tonight.
Leaders Ross County are at home to Forfar Athletic this evening and St Johnstone take on Brechin City at McDiarmid Park.
Hibernian moved to the top of the table with a 3-0 win over Arbroath at Easter Road and Alloa Athletic came from behind to beat Stirling Albion 2-1 at the Indodrill Stadium.
Inverness CT edged out Cove Rangers 3-2 in the Highland capital to go top of the section and Raith Rovers defeated Peterhead 3-1 at Stark's Park.
Motherwell made it three wins out of three by beating Dumbarton 2-0 at the C&G Systems Stadium and Morton thrashed Annan Athletic 5-0 at Galabank.
Partick Thistle will win the group if they beat Clyde at the Energy Check Stadium at Firhill tonight while Airdrieonians host Queen's Park in the other game.
Livingston were 2-1 winners over Stranraer at Stair Park to move top of the group and Falkirk saw off Berwick Rangers 3-0 at Shielfield.
Dunfermline stay top despite not playing - St Mirren were held to a 0-0 draw at Albion Rovers, although they won the shoot-out, and Edinburgh City went down 1-0 to East Kilbride at Ainslie Park.