Rangers beat St Mirren 3-0 on Sunday afternoon to move level on points with Scottish Premiership leaders Hibernian.
A Conor McCarthy own goal broke the deadlock midway through the first half and Alfredo Morelos grabbed a double after the break.
Later in the day, Kilmarnock and Celtic drew 1-1 at Rugby Park. Ryan Christie's free-kick gave Neil Lennon's men the lead but Chris Burke's 24th-minute penalty earned Killie a point.