Rangers have short changed bosses and risk ignominy of being remembered as one season wonders - Keith Jackson

Sometimes it comes down to nothing more than sheer desire.

And yesterday at Ibrox the team that wanted it more came out on top against the one with the greatest need.

Celtic may have been some way short of their free-flowing, Ange-balling best at the home of their city rivals but this was a result fashioned by force of will.

And when they headed back across the River Clyde they already had one hand on a trophy they were never supposed to win.

When Ange Postecoglou arrived back in June, the big Aussie wasn’t given as much as puncher’s chance of taking this title away from Rangers.

But now that his first campaign is thundering towards a climax, he has effectively knocked the champions out cold.

With just six games to go and a six point lead in the bag, plus a thumping goal difference, it would require a spectacular collapse now for Postecoglou not to emerge from his debut season without clutching onto the ultimate honour.

In fact, Celtic can now afford to lose twice and still get the job done, so it seems like an appropriate moment to fully acknowledge the enormous scale of Postecoglou’s achievement.

Somehow, in such a short space of time, he has managed to reinvent this side to such an extent that it has become unrecognisable from the fractured, dispirited unit which he inherited following the aborted mission for ten in a row.

And this latest Old Firm victory showcased the transformation he has made to the mentality of a team which had developed an allergy for derby day until his appointment.

That Celtic were able to dig out a win at the home of their nearest and dearest without operating anywhere near the levels of slick, high intensity attacking flair which has become expected under Postecoglou is testament to the