Rangers remain four points clear at the top of the cinch Premiership table after a 2-0 home win over St Johnstone this evening.
Goals either side of half-time from Alfredo Morelos and Ryan Kent earned Giovanni van Bronckhorst's men a comfortable victory.
Defender Anthony Ralston struck deep into stoppage time as Celtic edged out Ross County 2-1 at the Global Energy Stadium.
Liel Abada's opener was cancelled out by Jack Baldwin and the visitors had Carl Starfelt sent off before Ralston headed the winner.