After a 0-0 draw with Partick Thistle, Aberdeen moved joint top of the Scottish Premiership, while Hearts closed in on the top two.
Adam Rooney spared Aberdeen from defeat at home while Kilmarnock moved clear of rock-bottom Dundee United thanks to a win at Hamilton.
Aberdeen's 4-0 win against Kilmarnock cut the gap on Celtic to one point after Ronny Deila's men lost 2-1 at home to Motherwell.
Adam Rooney scored from the spot as Aberdeen put the pressure on leaders Celtic in the Scottish Premiership.
Scottish football will have a winter break and a new summer League Cup group stage from next season.
Aberdeen took advantage of Celtic's postponed game with Hamilton to earn a 2-0 win over Dundee on Saturday and close the gap to four points.
Hearts won their fourth consecutive Scottish Premiership match, beating Hamilton 2-0, while Aberdeen ended their winless run.
Celtic are six points clear at the top of the Scottish Premiership after a 3-1 win over Aberdeen on Saturday.
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