Rangers striker Alfredo Morelos scored his 100th goal for the Scottish champions as they moved three points clear at the top of the table with a 2-1 win at St Mirren on Sunday.
Steven Gerrard's side were rocked after just four minutes when St Mirren midfielder Connor Ronan fired home from 30 yards.
But Rangers recovered to level in the 41st minute through a Kemar Roofe penalty.
Morelos has struggled to find his best form this season, but the Colombia international headed the visitors in front two minutes later with his milestone goal.
Rangers rarely hit top form after the break but held on to inflict a first defeat in seven games for Jim Goodwin's team.
It was an important success for Rangers as they maintained their momentum, after a crucial 2-0 Europa League win over Brondby at Ibrox on Thursday.
Ahead of Aberdeen's visit to Ibrox on Wednesday, Rangers are three points clear of Hearts and Dundee United.
They are also four points ahead of Old Firm rivals Celtic, who have reeled off four successive victories. (AFP)

NPFL: Rangers win big as Nasarawa shock Abia
Nigeria know World Table Tennis Champs foes today
Bayelsa athletics boss Oredipe maps out dev plans
Falcons stars dominate IFFHS Africa XI
Eguavoen backs NPFL talents for Nigeria squad despite CHAN failure
He’s very strong, Simeone returns Osimhen praise
Joshua boxing return still uncertain
NBA star Bane eyes Nigeria switch
Palmer 'very, very happy' at Chelsea, says Rosenior
AFCON 2025: VAR recording discloses what referee said before Morocco's penalty miss against Senegal
AFCON 2025 highlights: World-class stadiums, VAR drama, record attendance
Oliseh slams Osimhen for costing Eagles’ AFCON trophy
Rangers International going, going . . . (63,494 views)
Amaju Pinnick: A cat with nine lives (54,788 views)
Second Term: Amaju Pinnick, Other NFF Heavyweights Home to Roost •How Pinnick Broke the Jinx (52,684 views)
Current issues in Nigerian sports: Matters arising (52,344 views)
Sports Development: Zenith Bank on the zenith (52,277 views)
Missing $150,000 IAAF Grant: Solomon Dalung’s Hide and Seek game (52,187 views)
Gov. Abdullahi Ganduje’s solid footprints, commitment to sports development in Kano State (52,054 views)
NFF Presidency: Pinnick, Maigari, Ogunjobi, Okoye in Battle for Supremacy (51,608 views)
Olopade, BET9A wave of revolution in NNL (50,787 views)
Commonwealth Games 2018: Shame of Muhammadu Buhari, Solomon Dalung (49,314 views)
Ibrahimovic’s Man U exit: Whose decision is it? And in whose interest? (47,704 views)
John Mikel Obi: Segun Odegbami’s Outrageous Call! (47,172 views)