Jeff Bottari/Zuffa LLC

Julianna Peña pulled off one of the biggest upsets in MMA history on Saturday night, dethroning Amanda Nunes with a second-round submission at UFC 269.

The bantamweight title fight was decided after three minutes and 26 minutes, with Peña going toe-to-toe with Nunes before dropping and locking her in a rear-naked chokehold.

“I told you,” Peña said after the fight. “Don’t ever doubt me again.”

Nunes started the fight strong, dropping Peña twice in the first round. Peña turned things around in the second round, landing 74 strikes, the second-most in a single round in bantamweight history, according to ESPN Stats & Information.

“I have to go back to the gym, train hard and get the next one,” Nunes said after conceding to Peña.

Nunes has not lost since 2014, when she fell to Cat Zingano in a bantamweight title fight.