Vitor Petrino defeats Serghei Spivac by unanimous decision
UFC Fight Night: Hernandez vs. Rodrigues
5:00
Spivac vs Petrino · UFC Fight Night
What happened
The result, the defining moments, and what the verdict means.
The heavyweights traded on the feet early, with Petrino's power giving him the edge in the exchanges.
Petrino took Spivac down in rounds two and three, forcing him to carry his weight on the mat.
Petrino chipped away with short shots while both exhausted heavyweights had little left to offer down the stretch.
- Official UFC resultsUFC Sacramento main card results
Who Called It?
How the analysts' picks held up once the cage door closed.
Analyst picks: We Want Picks missed; JakeGerberMMA missed.
Only 0 of 2 called the upset.
The experts above are a lens, not credentials we conferred — analyst, fighter or betting desk.
Full analyst picks ↓
We Want Picks Betting desk called 55 of 87 We Want Picks: predicted Spivac · to win. Actual Petrino · Dec. Result: Miss.
Takes Spivac as an underdog on grit and heavyweight experience: reads Petrino as an athlete who became a fighter rather than a fighter, and expects Spivac -- ten times the grappler of Petrino's last opponent -- to work in his own takedowns. Flags the one real concern that at heavyweight raw athleticism alone can still win a fight or two.
“So, Sergey Spivak is going to be the pick.”
Track record: winner called in 55 of 87 resolved picks.
JakeGerberMMA Analyst called 44 of 62 JakeGerberMMA: predicted Spivac · to win. Actual Petrino · Dec. Result: Miss.
Takes Spivac as the underdog, rating him a well-rounded heavyweight with sharp striking and calling the jab money against Delija. Expects him to outscore Petrino with the jab, right hand and leg kicks provided he avoids a big shot, and notes Petrino is very hittable. Adds that Spivac has the grappling fallback Petrino lacks if the striking goes badly.
“Give me Sergey here.”
Track record: winner called in 44 of 62 resolved picks, 10 a perfect call.
AI Predictions — Results
Pre-fight calls compared with the recorded result; draws and no contests are not scored.
Archive Pre-fight material — kept for transparency.
- 3.57 3.24
- 52% 51%
- 4.23 2.71
- 64% 79%
- 83% 71%
- 18-6-0
- Record
- 14-2-0
- 2-3 last 5
- Recent formRecent formWin–loss record over the fighter’s last five bouts, newest first, as carried in their UFC/FightMetric career stats.
- 3-2 last 5
- Orthodox
- StanceStanceWhich side a fighter leads from — a striking term, not a religious one. Orthodox: right-handed, left foot and hand forward (the common default). Southpaw: the mirror image, right side forward (usually a left-hander). Switch: changes between the two during a fight.
- —
- 08:22
- Avg. fight timeAvg. timeAverage fight timeThe mean length of the fighter’s bouts (minutes:seconds) — a rough read on whether they tend to finish early or go the distance. From UFC/FightMetric.
- 10:23
- Moldova
- Nationality
- Brazil
- Polar Bear Team
- Team
- CM System
Career stats per UFC.com; recent form is each fighter's last five bouts. Numbers reflect records coming into fight night. Bars compare each stat on a fixed scale; the “Edge” marker flags the leading corner where the gap is meaningful. The snapshot plots five career rates — output, striking defense, durability (strikes absorbed, inverted), takedown defense and finish rate — each normalised on its own scale.
Pre-fight analysis — how we saw it going in
Case for Spivac
Spivac is the one heavyweight here who wrestles with intent — 3.82 takedowns per 15 minutes, second only to Hernandez on this card — and 8 of his 18 wins are submissions. His route is underneath Petrino early rather than trading.
Case for Petrino
Petrino holds 79% takedown defence and absorbs 2.71 significant strikes per minute to Spivac's 4.23. His route is to stay vertical and win the striking exchange he is already ahead in.
What We Were Watching For
- Spivac's 3.82 takedowns per 15 minutes against Petrino's 79% takedown defence.
- Spivac absorbs more than he lands (4.23 against 3.57 per minute); Petrino does the reverse (2.71 against 3.24).
- Spivac has lost three of his last five; Petrino has won three of his.
- Neither tends to need the full fifteen — 83% and 71% finish rates, with Spivac averaging 08:22 a bout.
AI Predictions — pre-fight snapshot
AI Predictions
3 frontier models, same brief, independently — and the brief contains no betting line.
The Read
Latest snapshot · T-3
3 frontier models used the same brief independently. The brief contained no betting line.
3 of 3 models favour Petrino. The combined forecast puts 44% on Decision as the likeliest finish.
ChatGPT reads the fight as “Petrino’s varied three-fight winning run and striking profile give him a slight edge in a competitive heavyweight matchup. Spivac’s sambo remains a meaningful control and submission threat, but Petrino may do enough damage and sustained work to earn a decision if he manages the grappling exchanges.”
What to watch
- Petrino enters with three varied wins
- Spivac presents the stronger submission route
- Three-round format slightly favors measured consistency
Swing factor
Whether Spivac can repeatedly turn striking exchanges into sustained top control.
Where the models differ
The models differ on finish method, round timing. The full model calls are below.
- ChatGPTPetrino · Decision · medium confidence
- ClaudePetrino · Decision · medium confidence
- GeminiPetrino · KO/TKO · Round 2 · medium confidence
Agreement All 3 of 3 models pick Petrino.
Method outlook KO/TKO 37% · Submission 19% · Decision 44%.
Model spread 42%–45% Spivac · 55%–58% Petrino.
ChatGPT
GPT-5 · via Codex CLI · 2026-08-20
Overall win probability
Winner probability by method
Combined probability is shown in the rail centre; corner shares sit at the ends.
Pick
Vitor Petrino
How ChatGPT sees the fight
Petrino’s varied three-fight winning run and striking profile give him a slight edge in a competitive heavyweight matchup. Spivac’s sambo remains a meaningful control and submission threat, but Petrino may do enough damage and sustained work to earn a decision if he manages the grappling exchanges.
Keys to victory
- Petrino enters with three varied wins
- Spivac presents the stronger submission route
- Three-round format slightly favors measured consistency
X-factor
Whether Spivac can repeatedly turn striking exchanges into sustained top control.
Claude
Claude · via Claude CLI · 2026-08-20
Overall win probability
Winner probability by method
Combined probability is shown in the rail centre; corner shares sit at the ends.
Pick
Vitor Petrino
How Claude sees the fight
Petrino enters on a three-fight win streak that includes a decision, a knockout, and a submission. Spivac's listed sambo style provides a contrasting route, while his recent results include a decision win, a decision loss, and a first-round TKO loss. Petrino's varied recent wins give him the slight edge in a competitive three-round matchup.
Keys to victory
- Petrino's recent results include decision, knockout, and submission wins
- Spivac's listed sambo style provides an alternative route
- Spivac's recent results include a first-round TKO loss
X-factor
How quickly Spivac can initiate clinch and takedown exchanges may determine whether this becomes a grinding control fight rather than a striking contest favoring Petrino.
Gemini
Gemini · via AGY CLI · 2026-08-20
Overall win probability
Winner probability by method
Combined probability is shown in the rail centre; corner shares sit at the ends.
Pick
Vitor Petrino
How Gemini sees the fight
This heavyweight contest features a stylistic clash between Serghei Spivac's listed sambo style and Vitor Petrino's listed striking style. Petrino enters after decision, knockout, and submission wins, while Spivac's recent results include two decisions and a TKO loss. Petrino's varied winning run gives him the narrow edge and a plausible stoppage route.
Keys to victory
- Petrino's listed striking style against Spivac's listed sambo style
- Petrino's recent decision, knockout, and submission wins
- Spivac's recent decision results and TKO loss
X-factor
Whether Spivac's sambo route can disrupt Petrino's varied recent winning form
AI-generated · Not betting advice · 18+ (21+ where required) · Gambling help (opens in new tab) ↗
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