Rangers moved four points clear in second place in the Championship after winning 3-1 away to Dumbarton on Saturday.
Mark Wilson scored inside two minutes for the Sons but a Ryan Hardie double and a goal from Haris Vuckic earned Stuart McCall's men an important victory.
Champions Hearts beat Raith Rovers 2-1 at Tynecastle with goals from Sam Nicholson and Soufian El Hassnaoui. Calum Elliot pulled one back for Rovers against his former club.
Queen of the South edged closer to securing a play-off spot with a 2-2 draw at second-bottom Alloa. Ben Gordon had the Wasps in front but Derek Lyle (penalty) and Mark Millar, later sent off, turned the tide. Liam Buchanan equalised for Danny Lennon's team in 66 minutes.
.png){kind=logo}
