Falkirk come from behind with goals from Lee Miller, Bob McHugh and Myles Hippolyte to beat 10-man St Mirren.
Rangers v Motherwell and Kilmarnock v Hamilton are the two all-Premiership ties in the Scottish Cup fourth round.
Falkirk end a run of four games without a win and close the gap on the three teams above them with a deserved win at Ayr United.
Scottish Championship leaders Hibernian fight back to claim a point against 10-man Falkirk at Easter Road.
Scores, Results & Fixtures
Saturday 3rd December 2016
Saturday 19th November 2016
Saturday 12th November 2016
Saturday 5th November 2016
Saturday 10th December 2016
Saturday 17th December 2016
Monday 26th December 2016
Saturday 31st December 2016
Audio & Video
Kilmarnock comfortably beat Falkirk to secure an aggregate victory in the Premiership play-off final (UK only).
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