Alex McLeish reckons Rangers are now title favourites as Celtic dropped more points against Aberdeen on Sunday.
The Ibrox side followed up their derby win over Neil Lennon's men with a comfortable 2-0 win over Livingston, while the Hoops drew 3-3 with the Dons at Pittodrie.
Rangers are now six points clear of their rivals in the Premiership table, but have played an extra game.
And former Light Blues boss McLeish believes Steven Gerrard's men are 'unbeatable' at the moment.
He told Sky Sports: "Gerrard's side are becoming more complete and the last few games they have looked unbeatable.
"Their confidence will be at a different level."
Asked if Rangers are now favourites to win the league crown, he added: "Yes, I do.
"There will be leaders in the dressing room, as well as Steven Gerrard and Gary McAllister, saying we've got to keep this momentum going.
"Relentess, ruthless and no slip ups like they have done in the past two seasons."