Michael Bisping describes how Jessica Andrade was able to win the women's strawweight title from Rose Namajunas. For more UFC action, sign up for ESPN+ http://plus.espn.com/ufc. (2:13)

Saturday's UFC 237 card in Rio de Janeiro did not go well for the country of Brazil -- until the championship main event.

Brazilian strawweight Jessica Andrade (20-6) claimed UFC's 115-pound title with a stunning knockout of Rose Namajunas at 2 minutes, 58 seconds of the second round.

The finish came when Andrade lifted Namajunas (9-4) into the air and slammed her on the back of her head. The bout was quickly waved off. Namajunas recovered and exited the cage unassisted.

Andrade, 27, scored just the fourth slam knockout in a title fight in UFC history and the first since Matt Hughes' dramatic slam of Carlos Newton at UFC 34.

It was a massive victory for Andrade, who was fighting in her native country. Earlier in the night, the Brazilian crowd watched several of its legends lose, including Anderson Silva, Jose Aldo and Antonio Rogerio Nogueira. Silva's defeat was particularly demoralizing, as he suffered a knee injury in the opening round.

"I was certain of what I had to do in the second round," Andrade said. "I never did that move before in the UFC, the pile driver. That's what I do. It's my nickname."

Namajunas spoke to reporters at the postfight news conference, and her manager, Brian Butler, said she would not be transported to the hospital.

"She is clear-headed and being very gracious about the loss," he said.

After the loss, Namajunas expressed uncertainty about her future in MMA, saying, "Going into this one, I was like, 'This might be the last time I ever do this.' But we'll see. We'll take it one day at a time."

Asked if she meant she was contemplating retirement, Namajunas said, "I don't know. We'll see. I'm not gonna make no decisions right now. It's just hard to keep having fun with this."