Steven Gerrard’s men had to come from a goal behind to beat the Buddies in Paisley.
Connor Ronan opened the scoring with a screamer as St Mirren started brightly, putting Rangers under a lot of pressure.
The Ibrox side built into the game, however, and netted quickfire goals just before half-time. Kemar Roofe scored from the penalty spot after Ianis Hagi was felled before Alfredo Morelos converted a James Tavernier cross for his 100th goal for the club.
Rangers saw the game out without too much trouble.
How did the players rate out of ten?
Player ratings scale - 10: One of the best performances you've seen. 9: Outstanding. 8: Very good. 7: Good. 6: Average. 5: Poor, 4: Very poor. 3: A terrible day at the office. 2: Abysmal. 1: One of the worst performances you've seen.
1. Jon Mclaughlin - 6
Beaten by an unstoppable effort from Ronan. Plenty of touches of the ball but wasn’t called into that much action after the early Saints goal. Photo: Craig Williamson - SNS Group
2. James Tavernier - 7
Sloppy play in the build-up to St Mirren opening the scoring but came to the fore in an attacking sense. Delivered some great crosses, including the one for Morelos’ goal, and was a threat with his runs. Photo: Craig Foy - SNS Group
3. Connor Goldson - 7
Went about his business with minimum fuss as he tends to do. Brophy started lively but Goldson had him under control. Photo: Craig Foy - SNS Group
4. Leon Balogun - 7
Another solid display from the Nigerian. Stood up to the direct threat of Curtis Main when he was brought on for St Mirren. Photo: Craig Foy - SNS Group