Queen of the South recorded an impressive 4-0 win at Dumbarton to move to the top of the Championship.
Derek Lyle broke the deadlock after 20 minutes and Gavin Reilly, James Fowler and Iain Russell all struck in the second half.
Raith Rovers also made it two wins out of two, with an early Ryan Conroy goal giving them a 1-0 win away to Alloa.
Livingston saw off Cowdenbeath 2-1 at the Energy Assets Arena with goals from Danny Mullen and Jordan White before Lewis Milne pulled one back.