Leigh Griffiths came back from injury to give Celtic their first win at home in five matches, in spite of being decreased to 10 men against Partick Thistle.
The champions were dreary until the sending-off of Nir Bitton started them into life.
Thorn goalkeeper Tomas Cerny stood firm even with a late whirlwind of strikes yet was beaten toward the end.
The outcome was somewhat brutal on Thistle, who had looked on course for a seventh match unbeaten.
It likewise masks lacks in the Ronny Deila’s Celtic, who attempted to separate their rivals.
On the off chance that the solid group had anticipated that would find in the New Year in style, they were frustrated by a showcase ailing in energy and creative ability, especially in the first half.
Celtic supervisor Deila had talked before the match of the need to squeeze high up the pitch and play with force.
Yet, there was little proof of that until Bitton was released in the wake of getting a second alert for hopping into Gary Miller.
Maybe it was a feeling of shamefulness that impelled Celtic on, however, they started to pour forward as substitutes Griffiths and James Forrest peppered Cerny’s objective with shots, just for the goalkeeper to fight them off.
Be that as it may, he could do little as Kris Commons’ late exertion was redirected into the way of Griffiths and the striker opened past the Czech to win it for Celtic.
Thorn had gone close quite recently before that as Dan Seaborne’s header was tidied up the line by Kieran Tierney.
The late fervor deleted the memory of a poor first hour.
Beside a Callum McGregor shot that flashed wide, Celtic’s just genuine endeavor at undermining Cerny’s objective was a wild Tom Rogic strike that was obstructed by Liam Lindsay.
Celtic asserted vociferously for handball, yet arbitrator Stephen Finnie saw nothing wrong.
Also composed as Thistle were, they were just as toothless and, in spite of the fact that Kris Doolan was denied in the second half by Craig Gordon, the genuine tragedy was brought on by Griffiths.