Conor McGregor and Paulie Malignaggi exchanged words outside the T-Mobile Arena in Las Vegas on Tuesday evening.
As McGregor stood in the middle of a media scrum, Malignaggi - the Irishman's former sparring partner - engaged in conversation with McGregor's manager Audie Attar.
Attar told Malignaggi that he was 'talking out of his contract', alluding to a non-disclosure agreement which McGregor's camp had with the New Yorker regarding the two sparring sessions in which he was involved. Malignaggi has spoken openly regarding the sessions since he quit McGregor's camp in bitter circumstances earlier this month.
Malignaggi frequently asked, 'Did you bring your balls Conor?' McGregor responded by telling the former two-weight world champion to 'get over it'.
Malignaggi said afterwards that he only spoke about the sparring sessions after photos were leaked showing McGregor in favourable light.
You post up pictures, you send the media to me, you force to have to defend myself.