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MTV VMAs: Katy Perry Is a Total Ringer With 'Roar' Performance (Video)

Katy Perry came out swinging for the closing number at the 2013 MTV VMAs.

Perry delivered her first-ever live performance of her new single "Roar" at the awards ceremony, held at Barclays Center in Brooklyn.

Also read: MTV VMAs Winners: The Complete List

Apropos of the song's catchphrase "I got the eye of the tiger" -- a nod to the theme song from "Rocky III," the best Rocky movie ever, bar none, performed by rock legends Survivor -- Perry performed in a boxing ring, showing off her pugilistic skills as well as her pipes.

She danced. She swung. She jumped rope, people.

See video: