'Say hello' - Conor McGregor reveals name of newborn son

MMA star Conor McGregor has revealed the name of his newborn son. 

McGregor posted a picture of his baby on X (formerly Twitter) and stated, "Say hello to Mack McGregor everyone." 

The fighter has three other children - Conor Jr, Croía and Rian - with fiancée Dee Devlin. 

McGregor's fans and admirers commented on the post offering congratulations and well wishes. 

One fan commented, stating, "Congrats...Conor and family. What a name..."Mack". That's a fighter's name", while another stated, "Mack enters the world just in time for the Return of the Mac."