Morton are the new leaders in League 1 after beating Airdrieonians 1-0 at the Excelsior Stadium on Saturday.
Jamie McCluskey got the only goal just before half-time as Jim Duffy's men followed up Tuesday's Scottish Cup win over the Diamonds with another victory.
Forfar slip to second spot after a thrilling 3-3 draw against local rivals Brechin at Glebe Park. Andy Jackson and Bobby Barr had City 2-0 up but Omar Kader, Gavin Swankie and Chris Templeman turned things round, only for Alan Trouten to claim a late leveller.
Stenhousemuir moved out of the bottom two thanks to a 1-0 win over pre-season title favourites Dunfermline. Kris Faulds grabbed the only goal after 71 minutes at Ochilview.
Rory McAllister hit a hat-trick, one a penalty, as Peterhead leapfrogged Ayr United with a 3-2 win at Somerset Park. Craig Beattie and Scott McLaughlin (penalty) scored for Mark Roberts' men.
Bottom club Stirling Albion held Stranraer to a 1-1 draw at Forthbank. Phil Johnston fired the Binos in front but Steven Bell equalised before half-time.