UFC press conference to promote upcoming fight turns into all-out brawl

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LAS VEGAS — Talk about a knock-down, drag out UFC death match — and that was just at the press conference!

"Get the [heck] out of here!" Conor McGregor yelled at his rival Nate Diaz. "Get the [heck] out of here!"

A Vegas press conference to promote their upcoming match  morphed into absolute mayhem at the MGM Grand Garden Arena.

The trash-talking duo fired a barrage of obscenities back and forth at each other after McGregor was 30 minutes late for the presser.

UFC President Dana White decided to start the press conference without McGregor, and that set the tone for the over-the-top antics that followed.

McGregor hurled insults at Diaz and vice-verse.

At one point, Diaz pops up and makes a dramatic exit from the stage and yells out to McGregor: "F--k your whole team. How about that?"

Each fighter's entourage did plenty of verbal sparring, too. They threw water bottles at each other from across the room.

If the press conference is any indication, this fight is gonna be really nasty!

Gentlemen, it's on!