If matches were judged on referee decisions alone, then Celtic would have been the victors at Celtic Park on Sunday afternoon.

Ending the decade on a high against their fierce rivals Rangers would have been the ideal way to close out what has been a period of unparalleled success in Scotland.

They've won multiple titles but on this occasion, they tasted defeat.

In fact, this was the first time the Hoops have lost to their closest rivals at home since the very start of the decade, 2010.

It was a sluggish performance from Neil Lennon's side, one typified by the fact that defender Christopher Jullien was their biggest threat. He won a penalty and went close with two attempts, only to end up on the losing side.

That spot-kick was missed, however, but it wasn't as though other things didn't go Celtic's way. They scored a goal that should have been disallowed after Odsonne Edouard handled the ball while the referee also sent off Alfredo Morelos and one of Rangers' first-team coaches.

Focusing on that, you'd have thought the Scottish champions would have prevailed.

That's why the image above paints a very telling picture of the game that played out in front of Celtic's manager.

Countless things went Lennon's way so the disbelief written all over his face is understandable given they lost the clash.

No matter how many things played out in their advantage, Rangers' players were more up for it and resultantly came away with all three points.

Hoops fans will be hoping that come the end of the season, their manager won't have the same bewildered and pained expression on his face.

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If he does, they may well be staring at an end to their dominance and a Rangers title. That would be the club's worst nightmare but it's still very possible.

The gap now is down to just two points.

In other news, one Celtic player was described as "ten times better than Ajer" after the derby defeat...