UFC Vegas 115 MMA Match Preview: Dione Barbosa (8-4-0) vs. Melissa Gatto (9-2-2)

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The Meta APEX (formerly UFC Apex) is UFC’s intimate, state-of-the-art 1,200-seat facility in Enterprise, Nevada (Las Vegas Valley). It features a regulation Octagon optimized for broadcast and close-quarters action. As a standard Fight Night, the event is invitation/broadcast-focused with no public ticket sales.

Fight Card Format: 13 bouts (5 main card on Paramount+, 8 prelims). All non-main events are three rounds.

Start Times (all ET): Prelims begin at 5:00 p.m.; Main Card at 8:00 p.m. Live on Paramount+ (U.S.).

Weight Class: This bout is the Women’s Flyweight (125 lbs) prelim opener (first fight of the night).

Injury Report and Card Notes
No injuries or withdrawals have been reported for this flyweight prelim or the broader card. Both Barbosa and Gatto made weight successfully (Barbosa 126 lbs, Gatto 125.5 lbs). The lineup remains fully intact with all athletes medically cleared.

Key Fighter Matchups and Full Card Highlights
The card mixes veterans and prospects. Standouts include the main event (Moicano vs. Duncan) and co-main (Jandiroba vs. Ricci). Spotlight prelim opener:

Women’s Flyweight Prelim: Dione “The Witch” Barbosa (8-4-0, Brazil) vs. Melissa Gatto (9-2-2, Brazil).

Barbosa (5’6″, 66″ reach, Orthodox, age 33): Former Olympic judoka with well-rounded skills and grappling base. UFC record 2-2 since DWCS win.

Gatto (5’5″, 69″ reach, age 29): Striker/grappler returning from a long layoff. UFC record 3-2 prior to hiatus.
A Brazilian flyweight clash pitting Barbosa’s activity and judo base against Gatto’s power and layoff rust in a classic stylistic contrast.

Recent Fighter Forms and Fight History (Focus on Key Bouts)

Dione Barbosa: 2-2 in UFC. Most recent: unanimous decision loss to Karine Silva (August 2025); first-round submission win over Diana Belbita (April 2025). Earlier: competitive decision loss to Miranda Maverick and win over Ernesta Kareckaite. Pre-UFC: strong Contender Series showing. Strengths: Judo throws, submissions, and pace; struggles to adjust when early game plan fails.

Melissa Gatto: Returning after a 23-month layoff. Last fight: body-punch TKO win over Tamires Vidal (May 2024 at 135 lbs); prior narrow split-decision loss to Ariane Lipski. UFC record 3-2 before hiatus. Strengths: Striking power, clinch work, and finishing ability, but ring rust is a major question mark.

Fight History: First meeting—no prior bouts. Barbosa enters more active and battle-tested; Gatto looks to prove she can still hang at 125 lbs after the extended time off.

FIGHT ODDS

Dione Barbosa                   – 140

Melissa Gatto                    + 115

Odds Courtesy of Sports Odds Direct as of Friday, April 3, 2026