Kallum Higginbotham misses late two penalties as 10-man Dunfermline Athletic draw with Ayr United.
Rangers v Motherwell and Kilmarnock v Hamilton are the two all-Premiership ties in the Scottish Cup fourth round.
Bonnyrigg Rose and Forres Mechanics take league opposition to Scottish Cup replays as Buckie give Dunfermline a fright.
Dunfermline move up to eighth in the Championship, with Nicky Clark's goal adding to bottom club St Mirren's misery.
Scores, Results & Fixtures
Saturday 3rd December 2016
Saturday 26th November 2016
Scottish Cup - Third Round
Saturday 19th November 2016
Saturday 12th November 2016
Scottish Challenge Cup - Quarter-Final
Saturday 10th December 2016
Saturday 17th December 2016
Monday 26th December 2016
Monday 2nd January 2017
Saturday 7th January 2017
Audio & Video
Ross County beat Dunfermline in a Scottish Cup replay to set up a fifth-round tie against Linlithgow Rose or Forfar Athletic.