Aberdeen extended their lead at the top of the Premiership to four points with a 2-0 victory over Motherwell at Fir Park on Sunday.
Adam Rooney scored towards the end of the first half and he converted a last-minute penalty after Stephen McManus was sent off for handball as Derek McInnes' men notched up a seventh straight league win without the loss of a goal.
Hamilton Accies are up to third place after beating St Johnstone 1-0 at McDiarmid Park. Premiership top scorer Tony Andreu struck after 34 minutes against a Saints side who had James McFadden sent off late on.
Inverness CT remain within five points of the leaders following a 1-0 home win over St Mirren, courtesy of a Billy McKay goal with 13 minutes remaining.
Partick Thistle and Dundee United shared the spoils in an entertaining 2-2 draw at Firhill. Gary Mackay-Steven's opener was overturned by goals from Ryan Stevenson and Kris Doolan but Nadir Ciftci grabbed the equaliser.
Bottom club Ross County earned an important point in a 1-1 draw with Dundee at Dens Park despite playing most of the match with 10 men. Terry Dunfield was sent off after nine minutes and Jim McAlister gave Dundee the lead but Craig Curran equalised with a debut goal.
Kilmarnock are at home to Celtic on Monday, live on Sky Sports at 8.00pm.