Manager Neil Lennon took full responsibility for Celtic's 2-0 defeat to Kilmarnock at Parkhead.
Former Celt Cillian Sheridan scored two minutes before the break and midfielder Liam Kelly slammed in the second goal from the spot just after the hour mark.
Lennon made five changes to Celtic's starting XI after their 2-1 defeat to Barcelona in the Champions League on Tuesday and he blamed himself for the defeat.
He said: "I didn't envisage a performance as flat as that, particularly with freshening the team up. But it was my fault, I picked the team. I am not blaming the players for that.
"I thought we had a strong team, it looked good on paper but there was no fluidity. There was a malaise about the team that I did not like at all.
"It was too passive, there was no intensity to our play and we got what we deserved without Kilmarnock having to do that much.
"The first goal was a shambles and the second goal was just poor defending. It is a dose of reality; we came down to earth with a bump."
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what do you think?
A bunch of nobodys in europe who come back to the spl & think they just need to turn to get a result.All the smart talk of not needing rfc has disappeared from big mouth lawell & the sheep who follow a very average team 12000 under capacity that tells it's own story!!.
Enjoy your game against Clyde tomorrow Mark Ames.