THEY watched their team coast to a comfortable win over their fierce city rivals on Saturday. 

Now, Rangers fans have taken the battle off the pitch by mocking a Celtic supporters group with a poster stunt around Glasgow. 

The Union Bears shared a video last night of them plastering pictures across the city from Saturday's 2-0 win at Parkhead. 

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Prior to the derby, the Green Brigade had released their own clips of members putting posters from iconic Old Firm clashes near Glasgow landmarks. 

Following the full-time whistle on Saturday, Rangers themselves trolled the supporters group by posting a tweet of a picture of Connor Goldson's goal photoshopped with the caption "Put that on a poster". 

And while the dust might have settled on the pitch, it seems to not have settled off it with the Union Bears' clip being widely shared on social media. 

The video was posted online late last night and has since had nearly 2,000 shares and almost 6,000 likes.