Celtic remain 10 points clear at the top of the table after a 2-1 win over Aberdeen at Pittodrie. Kristoffer Ajer scored a late winner for Neil Lennon's men after Ash Taylor had cancelled out Callum McGregor's early goal.
Rangers beat Livingston 1-0 at Ibrox thanks to a 59th-minute winner from Scott Arfield in a match that was postponed on Saturday due to a waterlogged pitch.
Hibernian defeated Kilmarnock 2-1 at Rugby Park, with Adam Jackson netting the winner after Chris Burke had equalised a Greg Docherty goal.