Video: Conor McGregor, Urijah Faber clash backstage at UFC 189 weigh-ins, broken up immediately

Things got a little heated before the weigh-ins, creating a situation that could have been potentially devastating for the main event at UFC 189 happening tomorrow (July 11) at the MGM Grand Garden Arena in Las Vegas.

Apparently it was just some light-hearted banter that almost got out of control -- Faber is a good friend and training partner of Chad Mendes. He apparently suggested McGregor was a bit skinny after the Irishman suggested he was short by tapping him on the head.

As witness RJ Clifford described it:

Conor McGregor and Urijah Faber got into it backstage about 30 minutes ago. Started playful, then tempers flared. Broken up immediately.

— RJ Clifford (@RJcliffordMMA) July 10, 2015

Well, that's a relief. Wouldn't want anything to jeopardize what's shaping up to be one of the biggest fights in UFC history. For those who watched the weigh-ins (replay here and staredowns here) you know that McGregor and Mendes did not play nice when they faced off against one another afterward.

ONE MORE SLEEP, PEOPLE!

MMAmania.com will deliver LIVE round-by-round, blow-by-blow coverage of the entire UFC 189 fight card RIGHT HERE, starting with the Fight Pass "Prelims" matches online, which are scheduled to begin at 7 p.m. ET, and then the remaining under card balance on FOX Sports 1 at 8 p.m. ET, before the PPV main card start time at 10 p.m. ET.

For a closer look at UFC 189, check out a special extended video preview for "Mendes vs. McGregor" here.

MMA Video: Conor McGregor UFC 189 scrum