Conor McGregor certainly lit the fuse on the UFC lightweight division with a series of foul-mouthed tweets aimed at its stars on Monday night.

Among the Irishman’s targets was Tony Ferguson, whom he said “is not the level perceived” after a shock fifth-round TKO loss to Justin Gaethje at UFC 249.

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McGregor also claimed Ferguson “betrayed” Paradigm Sports Management, of which McGregor is a client, by leaving in April 2019 to sign with Ballangee Group.

Flip the Page to see the back and forth: