A UFC fighter 'freaked out' and got dragged away by police while trying to celebrate his teammate's win

• Michael Chiesa injured himself during rambunctious celebrations at a UFC event Saturday.
• The UFC welterweight reveled in his teammate Julianna Pena's victory over Amanda Nunes.

UFC welterweight Michael Chiesa "freaked out" and got dragged away by police while trying to celebrate his teammate Julianna Pena's historic win Saturday at the UFC 269 event in Las Vegas.

Nicknamed 'The Venezuelan Vixen,' the 32-year-old Pena scored one of the greatest upsets in UFC history when she defeated dominant women's bantamweight champion, Amanda Nunes, with a rear-naked choke in the second round.

Pena is a member of the Sikjitsu fight club, and trains alongside Chiesa, who was Octagonside at the T-Mobile Arena to provide support for his friend.

As soon as it was clear Pena had won, securing an indelible legacy as a giant killer, Chiesa went ballistic, injured himself trying to storm the cage, and had to be pulled away from security.

That's according to the UFC boss Dana White, who told reporters at a post-fight press conference what happened to the American fighter, and that he probably had a "little too much to drink."

"How do I say this without embarrassing the guy," White began at the media event.

"He had a little bit too much to drink this evening," the UFC president added. "When she won, he freaked out and tried to jump into the Octagon and fell down on his face, cut his eye, and busted his eye open."

White continued: "[He] then was arguing with the police that he needed to get into the Octagon and be with her, because that's his teammate.

"[The police] dragged him out, got him outside, and calmed him down in the back. I went back and talked to him for a minute, and we're all good."

In the video below, Chiesa can be seen trying to leap a barrier, falling over a chair, before darting toward the cage, off-camera.

Chiesa and Pena have trained together at the Sikjitsu camp in Washington, Spokane, for many years, and despite the ordeal, he was eventually able to congratulate her on Instagram.

"I have always believed it was written in the stars for one of us to become world champion," Chiesa wrote.

"For 14 years we've been running down this dream. [Pena] did it, she fulfilled that dream we both share.

"Pena is the UFC bantamweight champion of the world. I love you to the moon and back VV, I'm so proud of you!"