Bantamweight contenders Ketlen Vieira and Macy Chiasson faced off in a featherweight bout at UFC Vegas 107, after unexpected weight changes. Their fight took place on May 30, 2025, in Las Vegas, Nevada, amid shifting weight-class dynamics. Despite both fighters having a history with weight issues, and Chiasson previously competing at 145 pounds, Vieira managed to weigh in right at the featherweight non-title limit of 146 pounds.
The fight opened with a flurry of quick exchanges, as Chiasson circled on the outside, utilizing her reach advantage with kicks. In contrast, Vieira focused on landing powerful punches. With just under two minutes left in the first round, the action intensified. Vieira drove Chiasson against the cage while looking for a takedown. Though Chiasson defended fiercely with a whizzer to stay upright, she struggled to break free from the fence. Vieira finished the round strong, landing several punches and tying Chiasson up again, although the takedown never materialized.
In the second round, Vieira showcased her grappling skills as she successfully took the fight to the ground, establishing her position in Chiasson’s closed guard. Vieira then transitioned to half-guard, attempting to slide her leg through for a mount or side control. However, Chiasson managed to reclaim guard, but Vieira maintained control for the majority of the round, accumulating valuable time on top.
The third round began similarly, with Vieira working from guard as she aimed to land significant punches. Chiasson found herself far from the cage and was unable to escape until the final seconds of the round. In a last-ditch effort, she exploded forward, pushing Vieira into the cage and managing to bloody the Brazilian fighter. Although it was a spirited attempt, it fell short of a miraculous knockout. As the final bell rang, it became clear that the fight was largely in Vieira's favor, as the judges would confirm.
The official result declared Ketlen Vieira the victor over Macy Chiasson by unanimous decision, with the judges scoring the fight 29-28, 29-28, and 30-27 in favor of Vieira. This win not only boosts Vieira's standing in the featherweight division but also showcases her grappling and striking skills against a formidable opponent.
UFC Vegas 107 is now in the books, with Ketlen Vieira demonstrating her potential to be a serious contender in the women's featherweight division, adding another significant victory to her record. Don’t miss future events as the landscape of women's MMA continues to evolve with thrilling matchups ahead.
