Dustin Poirier has ruled out a fourth fight with Conor McGregor and insists he has nothing left to prove against the Irishman.
Poirier and McGregor have fought three times in the UFC, first meeting in 2014 when McGregor knocked out the American in less than two minutes.
They would meet again seven years later with Poirier avenging his defeat by becoming the first man to knockout McGregor in his MMA career.
