There's no love lost between UFC stars Jon Jones and Daniel Cormier.

Ever since learning last month about their April 23 rematch at UFC 197, the two rivals have been taking shots at each other on social media with reckless abandon.

On Tuesday, though, Jones pulled off the ultimate trolling tactic, replacing Cormier with a Photoshopped shot of Carl Winslow from Family Matters. Savage!

Looking for a way to retort, Cormier responded with a Photoshopped, fan-made Instagram of his own, before deleting it. 

Cormier's jab at Jones was clearly an attempt to poke fun of Jones's noted substance abuse issue with cocaine. 

Low blow? Who did it better?

These two definitely have history outside of social media.

Jones defeated Cormier by unanimous decision in January 2015, only to test positive for traces of cocaine, be suspended indefinitely by the UFC and stripped of his light heavyweight title last April for his role in a hit-and-run incident and for his substance abuse.

Playing the role of an opportunist, Cormier swooped right in to capture that light heavyweight title, but by last October, Jones was reinstated by the UFC.

And last month, Jones learned his return to the UFC would pit him against none other than Cormier at UFC 197 on April 23 at the MGM Grand Garden Arena in Las Vegas.

Ever since learning of their rematch, the rivals have been no-holds barred on social media, where no topic is out of bounds.

This bad blood should spell a great fight, though, right? Who do you like to win next month?

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(Photo: Steve Marcus/Getty Images)