Get to know the betting odds, predictions and picks for the upcoming Ketlen Vieira vs Macy Chiasson fight at UFC Vegas 107!
Both Ketlen Vieira and Macy Chiasson know how hard the women’s bantamweight division is, having spent years grinding through the ranks while watching others get title shots. These two veterans have faced similar opponents and experienced the highs and lows that come with competing at the highest level.
Saturday night at UFC Vegas 107, these two seasoned warriors will settle their differences in what promises to be a technical battle. Vieira brings her Brazilian toughness and well-rounded skills, while Chiasson represents the American wrestling tradition with her ground-and-pound arsenal. Both women have proven they belong in the octagon’s upper tier, but only one can take another step toward title contention.
Ketlen Vieira enters this contest with an 14-4 record. Her most recent loss came against Kayla Harrison, the current title challenger who is set to fight at UFC 316. Many expected Harrison to dominate the Brazilian completely. Instead, Vieira made Harrison look ordinary at times, proving she belongs in conversations about the division’s best fighters.
Macy Chiasson brings her own impressive credentials to this matchup, including a TUF victory that launched her UFC career. The American has compiled an 11-3 record, with her recent performances showing significant improvement in both technique and finishing ability. Her technical knockout victory over Mayra Bueno Silva and submission win against Pannie Kianzad both earned Performance of the Night bonuses, proving she can end fights in spectacular fashion when opportunities present themselves.
The oddsmakers have this fight virtually even. According to BetMGM, Ketlen Vieira is sitting as a slight underdog at +110. This means a bet of $100 will ean $110. Meanwhile Macy Chiasson comes in at -135 favourite. This means a bet of $135 will yield $100 profit.

These tight odds reflect just how evenly matched these fighters appear on paper. Both women have faced similar levels of competition and achieved comparable results throughout their UFC careers. The betting public seems split on who has the advantage.
This fight will likely be decided by Chiasson’s ability to get takedowns and keep Vieira on the ground. The American’s wrestling gives her the clearest path to victory. If Chiasson can get top position, her ground-and-pound could cause serious damage and potentially force a stoppage.
Vieira’s best chance involves keeping the fight standing and using her boxing to outwork Chiasson over three rounds. However, the striking numbers favor the American, who lands more significant strikes per minute while absorbing less damage. Chiasson’s reach advantage will help her control distance and set up her takedown attempts throughout the fight.
If we bet on the fight, we are going with Macy Chiasson to win by TKO in the third round.
(Image Credit: Mark J. Rebilas – Imagn Images)
mma I am a dedicated MMA and Boxing content writer at The Playoffs. I was instantly hooked on MMA after watching the fight between Lyoto Machida vs. Gegard Mousasi back in 2014, and since then, i have been an avid writer with a deep love for the sport and its techniques, providing readers with a thorough understanding of the sport. My favorite aspect of working at The Playoffs is the creative freedom it provides. The diverse range of topics, from listicles and SEO to news articles, keeps me engaged and motivates me to continuously improve my skills! I aim to capture the excitement of the combat sports world in my writing, acting as the middleman between fighters and their die-hard fans. It is kind of like a referee, but with words!
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