| UFC President Dana White did not confirm McGregor's 
				retirement but said he would no longer be fighting a rematch 
				with Nate Diaz on the UFC 200 card on July 9 after refusing to 
				fly to Las Vegas for a news conference and promotional photos.
 American Diaz handed the cocky Irishman his first UFC loss 
				earlier this month when he chocked him into submission in a 
				non-title bout at UFC 196.
 
 "I have decided to retire young. Thanks for the cheese. Catch 
				ya's later," McGregor, 27, said on Twitter.
 
 The news comes a week after Portuguese fighter Joao Carvalho 
				died following injuries sustained in a bout in Dublin against 
				McGregor's team mate, Charlie Ward.
 
 McGregor, who was sitting ringside at that fight, said on his 
				Facebook page that combat sport was a "crazy game" and that 
				Carvalho's death was "heartbreaking".
 
 "It is such a rare occurrence that I don't know how to take 
				this," he added.
 
 McGregor surged through the featherweight ranks before knocking 
				out champion Jose Aldo in 13 seconds in December. He has become 
				the UFC's hottest property with his outrageous trash-talking 
				outside the cage and vicious skills inside it.
 
 His stunning loss in March, where the Irishman went up two 
				divisions to fight American Diaz at welterweight, came as 
				another blow to the UFC following the previously undefeated 
				Ronda Rousey's loss to Holly Holm.
 
 Holm caused one of the greatest upsets in combat sport when she 
				knocked out Rousey in Melbourne to snatch the world bantamweight 
				title last November.
 
 Diaz, no stranger to trash-talking himself, responded to 
				McGregor's Tweet with one of his own: "I guess my work here is 
				done I'm retiring too."
 
 (This story corrects Diaz's first name in second par)
 
 (Writing by Jahmal Corner in Los Angeles; Editing by Peter 
				Rutherford)
 
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