The full card, graded
The recap · FightIQ NewsroomArnold Allen Reminds the Featherweight Division He's Still HereAllen's jab, wrestling, and nine-plus minutes of control time shut out a confident Melquizael Costa at UFC Vegas 117
The breakdown
Allen is the long-time featherweight contender from Suffolk — top-five for years, decision wins over Ortega and Vera-types, recently 1-2 in a stretch that's drained his title-shot equity. Costa is the Brazilian on a 5-fight UFC win streak, the youngest, longest, and freshest fighter in the matchup. Both heavy on takedown defence; whoever lands the early jab probably writes the script for the next 23 minutes.
Costa has the reach edge (+1") and is the more recent winner; Allen has the technique sample size and a deeper UFC ledger. Five-round structure favours the man who can pace; Costa hasn't gone past three but has the cardio profile to manage it.
- Costa on 5-fight win streak, all decisions in last 3
- Allen 1-2 in last 3, momentum reversal
- 1-inch reach edge to Costa
- Both 80%+ TDD — kickboxing match likely
- Model 55% Costa, market 46.5% — biggest edge on the main card
The breakdown
Choi is the South Korean returnee — the Korean Superboy, 35 now, on a 2-fight win streak after a long layoff stretch where his career nearly closed. Santos is the Brazilian on a 4-fight UFC streak with the higher Elo by 22 points. Three-inch reach edge to Choi; everything else tilts to Santos.
Choi's hands are heavy but he's been out of the kickboxing groove for years; Santos has been winning steadily without much fanfare. Live-dog territory for Choi if he can find the right hand, but the model and market agree this is Santos's fight to lose.
- Santos on 4-fight UFC win streak
- Choi 35 years old; Santos 31
- 3-inch reach edge to Choi
- Choi 7 KO wins in 8 career wins — power threat real
- Market and model agree — no edge
The breakdown
Wellmaker is a 6'10 — sorry, 5'10 — Bantamweight prospect 2-1 in the UFC, three knockouts on his contender-series ledger. Diaz is making his UFC debut from the regional scene; the system has minimal data on him and the matchmaker is pricing this as a Wellmaker showcase. The model strongly disagrees.
Polymarket has Wellmaker at 68.5%; the model has him at 48.1%. Why so wide? Wellmaker has been beaten on the ground in his career losses; Diaz's debut means the model is regressing the prediction to a coin-flip baseline. Either Diaz is the wrong kind of debutant for Wellmaker, or the model is too generous to the unknown.
- Diaz UFC debut — limited data; model defaults to coin-flip baseline
- 2-inch reach edge to Wellmaker
- 4-year age gap to Diaz
- Wellmaker beaten on the mat in his career losses
- Biggest model-vs-market edge on the card (+20.4pp)
The breakdown
Cuamba is 2-2 in the UFC at bantamweight, 27, with a 5-inch reach edge over the matchup. Sopaj is 25, the younger man, 1-1 in the UFC with a recent decision win. Both fighters are bubble-tier; the winner stays, the loser likely doesn't.
5-inch reach gap to Cuamba is structural. Sopaj's path is volume and pressure; Cuamba can fight long if he uses the jab. Decision-leaning fight either way.
- 5-inch reach edge to Cuamba — biggest of the prelims
- Both bubble-tier — career fight for both
- Sopaj 25, Cuamba 27 — slim age delta
- Cuamba 4-win-streak before the UFC; rebuild mode now
- Polymarket book light ($11k liq)
The breakdown
Tokkos is 1-2 in the UFC at light heavyweight, 6'4, 76-inch reach — a tall striker with one career win in the UFC and two losses. Erslan is 0-3 and one loss away from being released; the matchup is light-heavyweight survival territory.
4-inch reach edge to Tokkos, 47-point Elo gap, both fighters in must-win mode. The market is fading Tokkos's 1-2 record; the model is reading the structural advantages (size, reach, fresher hands than 0-3 Erslan).
- Tokkos 4-inch reach edge
- 47-point Elo gap, Tokkos's way
- Erslan 0-3 UFC — survival fight
- Both 6'+ — KO threat live for either
- Polymarket book moderate ($123k liq)
The breakdown
Vieira is a top-five women's bantamweight at most points in the last four years — 9-5 in the UFC, recent stretch has been mixed (LWLWL form). Cavalcanti is 5-0 in the UFC, 28 years old, the higher-Elo fighter by 29 points and on the better trajectory.
Cavalcanti's reach edge (2 inches), age edge (6 years), and form edge (5-0 vs LWLWL) all stack one way. Vieira's path is grit and championship-level experience; Cavalcanti's is keeping it on the feet and outworking her. Decision-leaning fight on paper.
- Cavalcanti 5-0 UFC — undefeated trajectory
- 6-year age gap, Cavalcanti's way
- Vieira's championship-level experience the swing factor
- 2-inch reach edge to Cavalcanti
- Vieira's recent form LWLWL — momentum question
The breakdown
Brundage is 5-8 in the UFC, on a 4-fight skid, and almost certainly on his last UFC fight if he loses tonight. Petroski is 8-4, more recently consistent, the wrestler-grappler with better technical pedigree.
Small edge, low conviction. Petroski's grappling pressure is the script; Brundage's chance is to land something heavy before Petroski takes him down.
- Petroski 1-inch reach edge
- Petroski higher Elo by 111 points
- Brundage 4-fight UFC skid — survival mode
- Petroski grappler vs Brundage striker — style asymmetry
The breakdown
Ardelean is 2-2 in the UFC, the marginally higher-Elo fighter. Viana is the Brazilian veteran 4-7 in the UFC with a long pro career, currently on a 4-fight UFC skid. Both fighters one or two losses from release.
Reach (5 inches) and height (2 inches) edges to Viana, but her form has been brutal — 1-4 in last 5. The market is pricing Viana out of contention; the model is reading her physical advantages and a path-of-least-resistance grappling game.
- 5-inch reach edge to Viana
- Viana 1-4 in last 5 — career on the line
- Ardelean higher Elo by 54 points
- Viana's sub threat from any position
- Both 33+ years old — physical decline question
The breakdown
Barez is 37 — oldest fighter on the card — and 1-2 in the UFC at flyweight. Gurule is 0-3, on his last fight in the promotion. Two bubble flyweights with combined 1-5 UFC records.
Barez has the reach edge (+2"), the age edge (5 years younger? no, older by 5), the better record, and the Elo edge (+48 points).
- Barez 2-inch reach edge
- 48-point Elo gap, Barez's way
- Gurule 0-3 UFC — release-fight territory
- Barez 37 — physical-decline question is real
- Polymarket book moderate ($116k liq)
The breakdown
Bannon is 2-2 in the UFC at women's strawweight, the higher-Elo and longer-reach fighter. Caliari is 0-2 in the UFC, on her last fight in the promotion barring an upset tonight.
Bannon has reach (+3"), height (+2"), Elo (+52 points), and record advantages. Model has her at 42.6% (which is the f2 prob, so model picks Caliari at 57.4% — wait this isn't right). Let me re-read: model picks Caliari, prob 0.574. Market has Caliari at 71.5%. The market is pricing the unbeaten record on Caliari (despite 0-2) as a sign of UFC adaptation; the model sees Bannon as a +structural-advantage favourite the market is wrong on.
- Bannon 3-inch reach edge
- Bannon higher Elo by 52 points
- Caliari 0-2 UFC — survival fight
- Polymarket book light ($9k liq)