Petr Yan throws shade at Conor McGregor after Dustin Poirier calls the Russian the best boxer in the UFC

Petr Yan was happy to hear Dustin Poirier refer to him as the best boxer in the UFC. What's more, the interim bantamweight champ took the opportunity to fire another shot at Conor McGregor.

Yan and McGregor have been going back-and-forth as they both claim to be the best pound-for-pound pugilist among MMA fighters. 'No Mercy' seems to have found a supporter in McGregor's bitter rival Dustin Poirier.

The Russian star shared a video of Poirier saying Yan is the best boxer in the UFC. To make sure his message reached McGregor, Yan tagged the Irishman and wrote the caption:

"Obviously @DustinPoirier understands boxing better than @TheNotoriousMMA"

He also posted a photo on Instagram captioned, "Who’s the best boxer in the UFC? Dustin Poirier says it’s Petr Yan, not Max Holloway."

This all came after Poirier appeared on the latest episode of The MMA Hour and shared his thoughts regarding the on-going debate in the MMA community. He said:

"I think Petr Yan. I really do. Just the way he moves, the way he doesn't waste a lot of movements. His positioning in always crisp. His footwork, he's never out of position. He doesn't load up but he throws clean power shots. You know, good accuracy, works the body well. Goes up, goes down. It's just a lot of things that he does really, really well."

Poirier also acknowledged that he's in the conversation for the debate. However, 'The Diamond' said he's not one to talk highly about himself.

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Petr Yan and Conor McGregor went back-and-forth on social media

The ongoing social media feud between Conor McGregor and Petr Yan stemmed from comments made by the Irishman last week. Claiming to be the best boxer in the UFC, McGregor said he'd "rip up" Yan.

The Russian responded by issuing an open challenge to McGregor. According to Yan, he's willing to fight McGregor in an MMA or boxing match and at any weight class.

Not one to be outdone, McGregor replied to Yan's invite with one of his own. The former champ-champ offered to host Yan and his team in Ireland for a sparring session at Crumlin Boxing Club.