Last week the model went 4–1–1, bringing the 2026 record to 37–14–5 overall. One of the stronger weeks of the season, and the process continues to do exactly what it’s supposed to do — find the edges, back the numbers, and stay patient when the market closes the gap.

This week the UFC returns to the Meta APEX for UFC Vegas 115. We’ll be upfront, this is a lean card with limited data and a main event that doesn’t offer much from a value standpoint. But there are a couple of spots on the card where the numbers give us a reason to act, including a chance to ride the underdog train for the second week in a row.

Dave Ross and I broke down the full card on this week’s First Strike. Give it a listen at the link before you finalize your card.

 

Let’s dig in.

Dione Barbosa vs Melissa Gatto

Last week we cashed a +110 ticket on Casey O’Neill returning from a year-long layoff. This week the model is pointing us toward another fighter coming back from extended time away and once again, she’s an underdog.

Melissa Gatto hasn’t been seen inside the octagon since a TKO victory back in May of 2024. Nearly two years on the shelf. She returns now against Dione Barbosa, who has gone 2–2 since her UFC debut in July of 2024, most recently dropping a decision to Karine Silva last December. Neither fighter has set the world on fire in their UFC run, but the numbers between them tell a pretty clear story.

Gatto comes in as the younger fighter at 29, with a three-inch reach advantage at 69 inches. More importantly, all three of her UFC victories have come by TKO — a finishing profile that stands out at flyweight.

The xR% gap is where it starts. Gatto walks in at a strong 65%, a number that reflects her ability to control and win rounds consistently. Barbosa sits at 47%, a concerning mark for a fighter only four fights into her UFC career. That’s red flag territory, and it shows up in the striking numbers too.

Barbosa lands just 2.40 significant strikes per minute with a –0.22 differential. Anything below three per minute paired with a negative differential is a profile that raises red flags. Low output and still absorbing more than she’s landing. Gatto, by contrast, lands 3.78 significant strikes per minute with a clean +0.95 differential. She’s efficient, she’s accurate, and she’s not taking unnecessary damage, with both women absorbing less than three significant strikes per minute defensively.

The ground game doesn’t dramatically shift the picture. Barbosa holds a 44% control rate, seven takedowns at 39% accuracy, and a 56% takedown defense, the lowest number in this matchup. Gatto checks in just a tick better across the board with a 50% control rate, six takedowns at 29% accuracy, and 64% takedown defense.

Running it through the model, Gatto receives a 69.76% win probability as the underdog. Her current price of +130 implies only 43%, and that gap is exactly what we look for. The layoff is a real consideration, as it always is, but we backed O’Neill last week in a similar spot and the numbers delivered.

Melissa Gatto goes on the slip at +130.

Virna Jandiroba vs Tabatha Ricci

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This one feels like a coin flip on the surface. The odds say coin flip. The model disagrees slightly. And that slight disagreement is enough to find value on the right side of the line.

Virna Jandiroba had a five-fight win streak snapped in her last outing, dropping a decision to Mackenzie Dern back in October of 2025. Now 37 years old with an 8–4 UFC record, she enters this one looking to get back on track. Across from her is Tabatha “Baby Shark” Ricci, six years younger at 31 and riding momentum off a TKO victory over Amanda Ribas last July. Ricci sits at 7–3 in the UFC and enters as the slight favorite.

The reach advantage goes to Jandiroba, three inches at 64 inches.

The xR% gap is modest but meaningful. Jandiroba sits at 59%, a workable mark that reflects her ability to grind out rounds. Ricci checks in at exactly 50% — essentially a fighter who wins and loses rounds in equal measure, which is a precarious place to be if you’re priced as a favorite.

The striking numbers don’t paint a clean picture for either fighter. Jandiroba lands just 2.33 significant strikes per minute with a –0.57 differential — low volume, and she’s absorbing more than she’s giving back on the feet. Ricci brings more output at 4.18 significant strikes per minute, but attaches a –1.01 differential to it, absorbing over five significant strikes per minute in the process. Baby Shark dishes it, but she eats it too. Her striking accuracy sits below 40%, which tells you these exchanges can get wild.

Now here’s where it gets interesting.

On the ground, both fighters bring legitimate weapons — but in very different ways. Jandiroba holds a 76% control rate, is averaging 5.72 takedown attempts per five minutes, has scored 30 takedowns and logged 16 submission attempts with three submission victories. She is relentless and suffocating when she gets her hands on you.

Ricci, somehow, comes in with a 95% control rate in clinch and ground exchanges, one of the higher marks you’ll find anywhere on the roster. She’s scored 23 takedowns at 37% accuracy and defends takedowns at 79% compared to Jandiroba’s 74%. Both women are legitimate threats in scrambles and on the mat.

This is a genuinely hard fight to call, and the model reflects that. But it does land somewhere.

Virna Jandiroba receives a 66% win probability from the model. While her current odds have moved to -130, she found herself as a slight underdog (+105) earlier in the week. That’s the value window we need. The model grades her as a stay away today as the favorite, but as a ‘dog…she was graded as Live. The one caveat here is worth repeating, watch the line movement through the week. If Jandiroba stays a favorite, the edge disappears and this becomes a pass. As an underdog or a pick’em, the model sees a live ‘dog worth backing.

If she gets back to plus money territory, Jandiroba is worth a bet.

Renato Moicano vs Chris Duncan

Money Moicano is one of the more entertaining fighters on the roster, and this main event has the ingredients for a fun fight.

Moicano enters on a two-fight losing streak, his last appearance a decision loss to Beneil Dariush in June of 2025. Worth acknowledging, the loss before that came when he stepped in on short notice to face Islam Makhachev in a main event spot. That’s not a blemish, that’s a moment. But the record is what it is heading into Saturday.

Across from him is Chris Duncan, riding a four-fight win streak and sitting at 6–1 since arriving in the UFC in 2023. Most recently he submitted Terrance McKinney in December. No small feat given what McKinney brings to every fight. Duncan is ascending, and the model takes notice.

The xR% gap favors Duncan, though neither number is alarming. Duncan sits at 69%, Moicano at 61%. Both men are winning rounds at a reasonable clip, which tells you this fight could be competitive throughout.

The striking is close. Moicano lands 4.17 significant strikes per minute with a +0.61 differential and has scored two knockdowns in the UFC. Duncan lands 4.78 per minute with a +0.33 differential — slightly higher volume, slightly lower efficiency. Duncan absorbs a touch more as well, and Moicano’s four UFC knockdowns suffered is worth noting if Duncan can find his range. Duncan has yet to score a knockout inside the octagon, though he carries seven professional finishes by KO on his overall record.

The grappling picture leans Duncan overall. He holds an 81% control rate in clinch and ground exchanges, has scored 13 takedowns at 43% accuracy, and brings three submission victories into this fight. Moicano is no slouch on the mat of course. 61% control rate, 20 takedowns at 42% accuracy, and an impressive six submission victories from six attempts, but his 62% takedown defense compared to Duncan’s 50% is a notable edge for Moicano if he wants to keep it standing.

Running it through the model, Duncan gets the nod, but barely. 56.87% win probability for Duncan, while his current odds of –180 imply roughly 64%. That gap goes the wrong way entirely. The model doesn’t support the price, and we’re not going to force action just because it’s the main event.

The total is set at 2.5 rounds juiced toward the under, which tells you the market expects this one to end early. There are method props floating around. Duncan by KO at +110, Duncan by submission at +750, but the data isn’t strong enough to pull the trigger on either. Duncan has never finished anyone by knockout in the UFC, and while the submission angle is interesting given his grappling profile, +750 is a longshot play that doesn’t fit a disciplined card.

This main event is best enjoyed without a ticket attached to it for now.

Two plays on the slip this week in Gatto and Jandiroba, with a clear stay-away on the main event despite the model’s slight lean toward Duncan. Not every card demands a full slate of bets, sometimes two well-reasoned plays are the right call.

The model sits at 37–14–5 for the 2026 season, and small APEX cards like this one are exactly where discipline separates the sharp bettor from the action junkie.

Dave Ross and I covered the full card on this week’s First Strike with special guest Doug Vazquez of Sports Illustrated. Subscribe wherever you listen to podcasts and on YouTube so you never miss an episode.

Follow along on X for live reactions and any last-minute updates heading into fight night. Find me at @TheRobbeo and Dave at @drosssports.

Good luck Saturday. Enjoy the violence.

Model Predictions | Win Prob.% | Bet Tier

  • Melissa Gatto | 69.76% | T1 Live Dog
  • Virna Jandiroba | 66% | T5 Trap Fav / T1 Live Dog*
  • Chris Duncan | 56.87% | T5 Trap Fav

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