Rangers are three points clear at the top of the Ladbrokes Championship after beating Dumbarton 4-0 at Ibrox on Tuesday night.
Jason Holt gave Mark Warburton's men the lead just after half-time and top scorer Martyn Waghorn doubled their advantage on the hour mark.
Nathan Oduwa scored the third goal with nine minutes left and Andy Halliday rounded things off from the penalty spot after Steven Saunders had been red carded.