Conor McGregor fumes at steroids barb from rival Nate Diaz

Conor McGregor was last night accused of taking steroids as his stand-in opponent for next week’s showdown in Las Vegas took on the UFC’s leading trash talker at his own game.

Nate Diaz took aim at the featherweight champion trading barb for barb with McGregor in a wild, hastily arranged press conference for the rejigged main event of UFC 196, twice accusing the Dubliner of taking performance-enhancing drugs.

“Everybody is on steroids, the whole UFC, everybody,” said the 30-year-old Diaz last night in Los Angeles. “You’re on steroids.”