Rangers are 13 points clear at the top of the Scottish Premiership table after beating Ross County 4-0 in Dingwall this afternoon.
Kemar Roofe, top scorer James Tavernier and Jermain Defoe were all on target for Steven Gerrard's side, with Callum Morris contributing an own goal.
In the later game, Celtic drew 1-1 with St Johnstone at Parkhead. Saints, who are now unbeaten in their last 11 matches, went ahead through substitute Chris Kane in 79 minutes but Mohamed Elyounoussi headed in the equaliser soon after.