Ange Postecoglou didn't necessarily agree that this was Celtic 's first real test of the season, but they passed it with flying colours.
Another first half derby blitz had Rangers on the canvas at Parkhead for the second time this year. And the champions went on to make it 4-0 after the break to move five points clear at the top of the Premiership table before welcoming Real Madrid to Glasgow on Tuesday. to kick off their Champions League campaign.
The writing was on the wall when Liel Abada fired them in front after just eight minutes. Jota added a sumptuous second before Abada popped up in the box once again to fire in a third shortly before half time, just as he did back in February the last time Celtic ran riot against their rivals. The Gers simply couldn't live with Celtic's tempo and intensity, although were guilty of switching off at crucial moments, for which they were ruthlessly punished.