Former boxing champ claims McGregor was KO'd in sparring

The Mayweather-McGregor World Tour is over for now, but folks still have a lot to say about the Aug. 26 mega fight.

Rumor has it that misfortune befell the UFC lightweight champion in one of his sparring sessions, at least according to former WBO welterweight champion Jessie Vargas. In a chat with Villainfy Media, Vargas says that he heard through the grapevine that McGregor went down for the count courtesy of one of his training partners.

"He got knocked out in sparring already, man," Vargas said, according to Darragh Murphy of JOE.co.uk.

Vargas wouldn't specify his sources, only adding, "The boxing world is small, it's a small circle."

McGregor has regularly been sharing photos of his training and so far his training partners have been saying all the right things in regards to the MMA superstar's boxing skills.

Related - Sparring partner: McGregor 'lifted me off my feet with a right uppercut'