UFC Seattle’s prelim card features a women’s flyweight clash between Scottish knockout artist Casey O’Neill and Brazilian veteran Gabriella Fernandes. This 3-round prelim bout is one of the most evenly priced fights on the entire UFC Seattle card, with both fighters carrying legitimate paths to victory at 125 lbs at the Climate Pledge Arena in Seattle, United States.
The odds sit at near pick’em territory, with O’Neill at -115 and Fernandes at -105. Here’s how we’re betting UFC Seattle: O’Neill vs Fernandes, including our UFC predictions, best bet, key props and an expert final verdict.
Mini Fight Info Strip
Event: UFC Seattle
Weight class: UFC Women’s Flyweight bout
Fight length: 3-round prelim bout
Date & time: March 29, 2026 – Prelims start: 02:00 pm ET, walk time ~04:10 p.m. ET
Venue: Climate Pledge Arena, Seattle, United States
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Odds updated: March 27, 2026 – 01:30 AM ET. Lines may move before fight night, especially after weigh-ins.
Tale of the Tape – Key Stats to Know
Before we get into the matchup, here’s a Tale of the Tape for O’Neill vs Fernandes.
Tale of the Tape
Casey O’Neill
Gabriella Fernandes
Record
10-2-0
11-3-0
Age
28
32
Height
5’6″
5’6″
Reach
69″
66″
Stance
Orthodox
Southpaw
Sig. Strikes Landed
7.89
3.56
Striking Accuracy
52%
48%
Strikes Absorbed
5.65
5.19
Striking Defense
57%
52%
Takedowns
1.45
0.44
Takedown Accuracy
34%
18%
Takedown Defense
70%
68%
Submission Avg.
0.7
0.2
O’Neill’s 7.89 significant strikes per minute is the standout number in this matchup and the highest output on the entire UFC Seattle prelim card. Both fighters absorb significant volumewhich reflects two fighters built for exchanges rather than avoidance, and gives this prelim genuine finish potential from the opening bell despite the market pricing it as a likely decision.
Fighter Breakdown – Casey O’Neill Analysis
O’Neill comes in with a 10-2-0 record as one of the most offensively explosive fighters in the women’s flyweight division. The 28-year-old orthodox Scot has built her UFC career on elite striking volume, solid takedown defense, and a submission average that gives her a multi-dimensional finishing threat Fernandes has limited experience navigating.
Strengths: Elite 7.89 significant strikes per minute at 52% accuracy. Solid 57% striking defense and 70% takedown defense give her strong defensive fundamentals on both feet and mat. Her 0.7 submission average and 1.45 takedown average give her a secondary grappling threat. Three-inch reach advantage creates structural distance management problems for a southpaw opponent at 125 lbs.
Weaknesses: Her 5.65 strikes absorbed per minute is the higher number in this matchup. Her 10-2 record, while strong, includes losses that have come when opponents find rhythm against her high-output style.
Betting Angles: O’Neill by Decision (+175) is our primary play, offering plus money on a high-volume striker. Her -105 moneyline is the best near-even price available on this card for a fighter with the superior striking profile.
Fighter Breakdown – Gabriella Fernandes Analysis
Fernandes comes in with an 11-3-0 record as a durable, experienced Brazilian veteran who has navigated elite flyweight competition throughout her career. The 32 year old southpaw brings a measured, disciplined striking game and genuine durability against the highest-volume striker she has faced at this level.
Strengths: Her southpaw stance creates the kind of structural angles that orthodox fighters with high output struggle to manage consistently. 48% striking accuracy reflects genuine technical discipline rather than wild, uncontrolled exchanges. Solid 68% takedown defense. Her 11-3 record against elite flyweight competition reflects a fighter who finds ways to compete at the highest level.
Weaknesses: Her 3.56 significant strikes per minute is the lower offensive output in this matchup. Her 0.44 takedown average and 18% accuracy mean she has no meaningful wrestling path to take this fight away from the standup exchanges where O’Neill thrives.
Betting Angles: Fernandes by Decision (+195) offers genuine plus-money value if her southpaw discipline and durability neutralize O’Neill’s volume and push the fight toward scorecards on her terms.
Best Bets For Casey O’Neill vs. Gabriella Fernandes
O’Neill’s 7.89 strikes per minute at 52% accuracy against Fernandes’s 52% striking defense creates consistent scoring opportunities across three rounds, and her 70% takedown defense limits the grappling alternatives Fernandes might use to disrupt her rhythm.
At +175 (implied 36.4%), we project this outcome closer to 43-46%, making it outstanding value on the most likely path to victory for the higher-volume striker across three championship rounds.
Both fighters absorb strikes at significant volume; O’Neill at 5.65 and Fernandes at 5.19. But neither carries the kind of one-shot finishing power that produces early stoppages at flyweight. O’Neill’s 0.7 submission average and Fernandes’s 68% takedown defense limit the grappling finish potential, and Fernandes’s southpaw durability against high-output orthodox fighters suggests she will survive the early exchanges and compete through the final horn.
At -215 (implied 68.3%), this is a steep price for a parlay anchor, but the structural case for a decision is the strongest of any fight on the prelim card.
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Small stake only. O’Neill absorbs 5.65 strikes per minute and her trading style creates genuine windows for a clean southpaw shot in any exchange. Fernandes’s angles from the left side have produced stoppages against UFC-level competition throughout her career, and if she catches O’Neill mid-combination the finish is live at any moment.
At +500 (implied 16.7%), a small stake acknowledges the knockout ceiling Fernandes carries into every striking exchange. Keep stakes at 0.25 units maximum.
Prediction – Final Verdict
Official Pick: Casey O’Neill by Decision
We are backing O’Neill to use her elite striking volume, three-inch reach advantage, and superior output to outwork Fernandes across three rounds and earn a decision. Fernandes will make this competitive. Her southpaw angles, durability, and technical discipline give her a genuine path to disrupting O’Neill’s rhythm and landing clean in the exchanges.
But 7.89 strikes per minute at 52% accuracy from an orthodox fighter with a reach advantage is a combination that builds scorecards in every round against a 3.56 strikes per minute opponent. O’Neill moves to 11-2 with a decision that keeps her firmly in the flyweight contender conversation.
How to Watch UFC Seattle: Tips for This Card
Card Tips:
O’Neill’s 7.89 strikes per minute is the highest output on the entire prelim card.
The Hooper vs Gibson Jr. lightweight bout later on the prelims features the sharpest grappling contrast of the night.
Adesanya vs Pyfer closes the night at middleweight in a five-round technical contest between a former two-time champion and one of the division’s most dangerous finishers.
UFC Seattle Fight Card
Main Card (05:00 p.m. ET –Paramout+)
Israel Adesanya vs Joe Pyfer — Middleweight bout, 5 rounds
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