Jessie Vargas: Brandon Rios KO'd McGregor in Sparring

Former opponent of Manny Pacquiao and former two division boxing word champ Jessie Vargas says that Brandon "Bam Bam" Rios knocked out UFC Superstar Conor McGregor in boxing sparring session.

"This guy (Conor McGregor)  got knock out in sparring. We were hearing stories" said Vargas during his interview to Villainfy Media. 

"The boxing world is small so it's small circle"

Jessie Vargas claimed that McGregor was knocked out by Brandon Rios ahead of McGregor's mega fight with boxing superstar Floyd Mayweather on August 26. Vargas didn't reveal his source and didn't give more details regarding the issue.