UFC Vegas 101 Results: Dern Submits Ribas
Fight Night: Dern vs. Ribas 2 took place on Jan. 11, 2025, at the Las Vegas Apex. Mackenzie Dern submitted Amanda Ribas with an armbar at 4:56 of Round 3, evening their series at one win apiece. The official results record the finish.
Archived odds and pre-fight preview
Archived pre-fight odds listed Amanda Ribas at -205 and Dern at +175. Those figures are a historical snapshot from the pre-fight article, not current betting lines; odds vary by sportsbook and timing. The preview favored Ribas by decision, but Dern won by submission.
Dern’s grappling changes the rematch
The main event developed into a contest of ground positions rather than a repeat of their first meeting. Dern secured an early takedown and spent stretches on top, while Ribas worked to restrict her offense from underneath. The exchanges required Dern to create openings rather than simply hold position.
In the decisive third-round sequence, Dern threatened an armbar from her back before reversing position and moving into mount. She returned to the armbar as the round approached its end, separated Ribas’s defensive grip and forced the submission with four seconds left. MMA Fighting’s ringside report details that transition.
The finish gave Dern consecutive victories at that point in her strawweight career and reversed the outcome of a matchup first contested more than five years earlier. It also resolved the main event without judges’ scores. The archived prediction and video remain useful records of the buildup, while the confirmed submission result establishes how the rematch actually ended.
