Aljamain Sterling, Chris Weidman and Justin Gaethje left STUNNED as Pena brutally defeats Amanda

Aljamain Sterling, Chris Weidman and Justin Gaethje left STUNNED as Julianna Pena brutally defeats Amanda Nunes at UFC 269

Julianna Pena pulled off one of the biggest shocks in mixed martial arts history

As a huge underdog she faced icon of the sport Amanda Nunes at UFC 269

The likes of Michael Chiesa, Miesha Tate and Aljamain Sterling all watched on

Pena later said the world is her oyster and that she expected the victory. Screams rang out and mouths were left fully agape as Julianna Pena pulled off one of the biggest shocks in mixed martial arts history to inflict a resounding defeat upon Amanda Nunes.

Leading up to the headline event of UFC 269 underdog Pena - who had backed herself heavily in the build-up to the fight - dismantled her opponent who is widely seen as the greatest fighter in women’s MMA history.

Pena pulled off one of the biggest upsets in mixed martial arts history to score a second-round submission win over Nunes and win the UFC bantamweight title, and watching on at the side of the Octagon a string of famous faces failed to keep their composure.

Michael Chiesa, Miesha Tate, Aljamain Sterling, Andrei Arlovski, Chris Weidman and Justin Gaethje were each picked up by the BT Sport cameras revealing their shock at the outcome. Joe Rogan hailed the victory as 'the biggest upset in the history of the sport', as the masses were left stunned by what they had witnessed.

The former Ultimate Fighter winner pulled off one of the most improbable upsets in the history of the sport after tapping out Nunes with a rear-naked choke in the second round.