A couple of hours after Celtic lost in Germany on Wednesday, St Johnstone fell to the same fate at Kilmarnock, who started the game bottom of the table without a win.
That was Saints first defeat since August, so any notion that tomorrow’s Premiership game in Perth will be anything other than taxing for Celtic is likely to be wide of the mark.
It is an away game after an away game in Europe, the scenario when points are most often dropped. Add to this recent form, which is well below our early season standards, and injuries to key players, and your have a cocktail of concern.
These are the days where titles are won, the days we acquired such a deep squad to cope with. A win please, Celtic.
More on Callum McGregor after tomorrow, eye on the prize.