Now in his third spell in charge in Dingwall, Derek Adams has already endured the full gamut of emotions associated with the role.
An upturn in results was followed by a late loss to Dundee that prompted Adams to strongly criticise the standard of the Scottish top flight.
And, after Saturday's Scottish Cup defeat by Championship visitors Partick Thistle, Adams admitted he may have underestimated the size of the task after replacing Malky Mackay.
County have lost 10 in a row against Celtic since their last win - 1-0 at home in 2020.
However, Adams can draw fond memories of earlier meetings, having overseen a 2010 Scottish Cup semi-final win and a 3-2 league victory - coming from two goals down - in 2013.
Even so, halting Celtic's current run of five wins in a row in all competitions will take an almighty effort from the Highlanders considering they have not won in five overall and six away from Dingwall.