Joe Aribo and his midfield accomplice Hagi helped cut St Johnstone open in the first half to ease Steven Gerrard’s side into the half-time lead and once Hagi added the third immediately after the break, Rangers could relax a little.
They brought Alfredo Morelos off the bench in the second half to take part in the win after his suspension and maintained a 16-point margin at the top of the table.
Scroll down and click through to find out how all the Rangers players rated out of 10.
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.
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1. Allan McGregor - 7
Little to do as has so often been the case this season, but alert to make a great one-handed save from Kane in the second half. Photo: Rob Casey - SNS Group
2. James Tavernier - 7
Most right-backs would be delighted with a performance like this , but Tavernier's standards have been so high this term, he looked off-colour by comparison. Still a strong performer, willing runner and key feature in Rangers' play. Photo: Rob Casey - SNS Group
3. Borna Barisic - 7
Left-back involved a lot more than captain on the opposite side but back and front Croatian was useful asset. Should have done better with a first-half free-kick. Photo: SNS Group
4. Connor Goldson - 7
Unable to step out as much as he'd like and passes from deeper were not quite as effective, but defensively sound and brave with Helander alongside. Photo: IAN MACNICOL