​Scott Allan's free-kick helped second-placed Hibernian extend the gap over Rangers to four points after a 1-0 win at Alloa​ on a day Edinburgh rivals, and runaway Scottish Championship leaders, Hearts hit 10 past Cowdenbeath.
Alloa Athletic will be without Stephen Simmons for the visit of Hibernian on Saturday.
Hibernian eased to a comfortable 3-0 win over Dumbarton at Easter Road to move up to second in the Scottish Championship.
Rangers caretaker manager Kenny McDowall was in defiant mood as he reflected on the Ibrox side's third straight defeat.
Hibernian climbed above Rangers into second place in the Championship as they recorded a 2-0 win on Friday night - their third league success of the season over the Ibrox side.
Beleaguered Rangers will be without Lee McCulloch and Steve Simonsen for the game against fellow play-off hopefuls Hibernian on Friday night.
Celtic have been paired with Dundee United in the draw for the quarter-finals of the Scottish Cup.
Hibernian came from a goal down at Easter Road to beat Arbroath 3-1 and book a place in the Scottish Cup quarter-final.