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Serghei Spivac

Heavyweight · REAL v1.0 (registered) #22; v1.1 (shadow) #24

Descriptive profile. The resume rank is what has been earned; these statistics are context, not a prediction. A test on Oct 20, 2026 found that career statistics add nothing reliable to age, layoff and experience as predictors of the next result (experiments/REGISTER.md, EXP-2026-10-20-14).

Weight band 19-24: the 10th to 90th percentile of his position across weight vectors drawn near the 70/30 weights. Rating 1,565, deviation 114: measured from 16 UFC bouts; a one-bout newcomer sits near 290.

Age 31 (born 1995-01-24) · Height 6 ft 3 in (190 cm) · Reach 78 in (198 cm) · Stance Orthodox · 71 days since last bout (2026-08-22) · Last five 2-3 · Streak L1

Why he is ranked here

Rating 1,565 is the division's 18th highest of 55 board fighters; the ledger stands at +0.2 (+3.2 from quality wins, less 2.0 for blowout losses, less 1.0 for other losses outside the top 5; losses count for three years); 6 quality wins in 15 years, 3 over top-10 opponents, which makes him entrenched; form penalty 0.15 for a 2-3 last five. Score +0.03 = +0.13 (rating term, 70% weight) +0.05 (ledger term, 30% weight) -0.15 (form penalty); score order put him at #22.

TermValueDetail
Score+0.0370% rating term + 30% ledger term - form penalty
Rating term+0.13resume rating 1,565, scaled against the division's interdecile range
Ledger term+0.05quality ledger +0.2: +3.2 QW +0.0 proof -2.0 blowout -1.0 weak
Form penalty0.15last five 2-3
Quality wins, 15 years63 over top-10 opponents, 6 over top-15; entrenched
Placementscore order #22v1.0 (registered)
Shadow board v1.1#24score -0.08; score order #24

Rules, weights and worked examples: methodology.

Last ten bouts

DateEventOpponentOpp. official rankResultMethodRoundModel p
2026-08-22UFC Fight Night: Hernandez vs. RodriguesVitor PetrinounrankedLunanimous decision3 (5:00)54%
2026-02-21UFC Fight Night: Strickland vs. HernandezAnte Delija#9Wunanimous decision3 (5:00)55%
2025-06-07UFC 316: Dvalishvili vs. O'Malley 2Waldo Cortes Acosta#11Lunanimous decision3 (5:00)58%
2025-01-18UFC 311: Makhachev vs. MoicanoJailton Almeida#6LKO/TKO1 (4:53)34%
2024-08-10UFC Fight Night: Tybura vs. Spivac 2Marcin Tybura#8Wsubmission1 (1:44)53%
2023-09-02UFC Fight Night: Gane vs. SpivacCiryl Gane#2LKO/TKO2 (3:44)36%
2023-02-04UFC Fight Night: Lewis vs. SpivacDerrick Lewis#7Wsubmission1 (3:05)52%
2022-08-06UFC Fight Night: Santos vs. HillAugusto Sakai#14WKO/TKO2 (3:42)56%
2022-03-05UFC 272: Covington vs. MasvidalGreg HardyunrankedWKO/TKO1 (2:16)49%
2021-09-04UFC Fight Night: Brunson vs. TillTom Aspinall#13LKO/TKO1 (2:30)34%

Opp. official rank = the UFC media-panel rank of the opponent on the date (C champion, #1 to #15, unranked; n/a before Feb 2013 or where no official board existed). Model p = the predictive model's pre-fight win chance for him (frozen performance-adjusted Elo; bouts before 2020 were in its tuning sample). Linked opponents have a profile.

Career statistics

Through 2026-10-31, UFC bouts only. Percentile = share of the 55 board fighters at Heavyweight at or below this value; high is a position in the division, not a verdict.

Output
Significant strikes landed per minute3.35(36th percentile at Heavyweight)
Significant strike accuracy47%(31st percentile at Heavyweight)
Knockdowns scored per 15 minutes0.00(29th percentile at Heavyweight)
Share of wins by finish67%(50th percentile at Heavyweight)
Defence and damage
Significant strikes absorbed per minute4.23(62nd percentile at Heavyweight)
Significant strike defence51%(55th percentile at Heavyweight)
Knockdowns suffered per 15 minutes0.21(47th percentile at Heavyweight)
Significant strikes absorbed, career595(91st percentile at Heavyweight)
KO/TKO losses4 (last 2025-01-18, 652 days ago)(95th percentile at Heavyweight)
Submission losses0(76th percentile at Heavyweight)
KO/TKO losses per bout over 10 years, each weighted down by the finisher's danger0.085(56th percentile at Heavyweight)
Grappling
Takedowns landed per 15 minutes3.42(91st percentile at Heavyweight)
Takedown defence53%(23rd percentile at Heavyweight)
Share of cage time in control30%(76th percentile at Heavyweight)
Share of significant strikes landed in the clinch or on the ground37%(78th percentile at Heavyweight)
Stylewrestler (6.0 takedown attempts per 15 min; 30% control)
Career stage
Age31.8(36th percentile at Heavyweight)
Age at UFC debut24.3(2nd percentile at Heavyweight)
Years since UFC debut7.5(85th percentile at Heavyweight)
UFC bouts16(89th percentile at Heavyweight)
Cage time, minutes140(87th percentile at Heavyweight)
Bouts per year, last three years1.7(51st percentile at Heavyweight)
Days since last bout71(44th percentile at Heavyweight)

Board position since Oct 2023

C10203020252026Oct 2023Oct 20262023-10-06: #6, Heavyweight2023-10-13: #6, Heavyweight2023-10-20: #6, Heavyweight2023-11-03: #6, Heavyweight2023-11-10: #8, Heavyweight2023-11-17: #7, Heavyweight2023-12-01: #7, Heavyweight2023-12-08: #7, Heavyweight2023-12-15: #7, Heavyweight2024-01-12: #7, Heavyweight2024-01-19: #7, Heavyweight2024-02-02: #7, Heavyweight2024-02-09: #7, Heavyweight2024-02-16: #7, Heavyweight2024-02-23: #7, Heavyweight2024-03-01: #7, Heavyweight2024-03-08: #7, Heavyweight2024-03-15: #7, Heavyweight2024-03-22: #7, Heavyweight2024-03-29: #7, Heavyweight2024-04-05: #7, Heavyweight2024-04-12: #7, Heavyweight2024-04-26: #7, Heavyweight2024-05-03: #7, Heavyweight2024-05-10: #7, Heavyweight2024-05-17: #6, Heavyweight2024-05-31: #6, Heavyweight2024-06-07: #6, Heavyweight2024-06-14: #6, Heavyweight2024-06-21: #6, Heavyweight2024-06-28: #6, Heavyweight2024-07-12: #6, Heavyweight2024-07-19: #6, Heavyweight2024-07-26: #6, Heavyweight2024-08-02: #6, Heavyweight2024-08-09: #6, Heavyweight2024-08-16: #5, Heavyweight2024-08-23: #6, Heavyweight2024-09-06: #5, Heavyweight2024-09-13: #5, Heavyweight2024-09-27: #5, Heavyweight2024-10-04: #5, Heavyweight2024-10-11: #5, Heavyweight2024-10-18: #5, Heavyweight2024-10-25: #5, Heavyweight2024-11-01: #5, Heavyweight2024-11-08: #5, Heavyweight2024-11-15: #5, Heavyweight2024-11-22: #7, Heavyweight2024-12-06: #7, Heavyweight2024-12-13: #7, Heavyweight2025-01-10: #7, Heavyweight2025-01-17: #7, Heavyweight2025-01-31: #7, Heavyweight2025-02-07: #6, Heavyweight2025-02-14: #6, Heavyweight2025-02-21: #6, Heavyweight2025-02-28: #6, Heavyweight2025-03-07: #6, Heavyweight2025-03-14: #7, Heavyweight2025-03-21: #7, Heavyweight2025-03-28: #7, Heavyweight2025-04-04: #7, Heavyweight2025-04-11: #7, Heavyweight2025-04-25: #7, Heavyweight2025-05-02: #7, Heavyweight2025-05-09: #7, Heavyweight2025-05-16: #7, Heavyweight2025-05-30: #7, Heavyweight2025-06-06: #7, Heavyweight2025-06-13: #21, Heavyweight2025-06-20: #21, Heavyweight2025-06-27: #21, Heavyweight2025-07-11: #21, Heavyweight2025-07-18: #19, Heavyweight2025-07-25: #19, Heavyweight2025-08-01: #19, Heavyweight2025-08-08: #19, Heavyweight2025-08-15: #19, Heavyweight2025-08-22: #19, Heavyweight2025-09-05: #18, Heavyweight2025-09-12: #19, Heavyweight2025-09-26: #17, Heavyweight2025-10-03: #19, Heavyweight2025-10-10: #17, Heavyweight2025-10-17: #18, Heavyweight2025-10-24: #18, Heavyweight2025-10-31: #18, Heavyweight2025-11-07: #17, Heavyweight2025-11-14: #18, Heavyweight2025-11-21: #18, Heavyweight2025-12-05: #17, Heavyweight2025-12-12: #17, Heavyweight2026-01-23: #19, Heavyweight2026-01-30: #19, Heavyweight2026-02-06: #22, Heavyweight2026-02-20: #22, Heavyweight2026-02-27: #18, Heavyweight2026-03-06: #18, Heavyweight2026-03-13: #18, Heavyweight2026-03-20: #17, Heavyweight2026-03-27: #17, Heavyweight2026-04-03: #17, Heavyweight2026-04-10: #17, Heavyweight2026-04-17: #18, Heavyweight2026-04-24: #19, Heavyweight2026-05-01: #20, Heavyweight2026-05-08: #20, Heavyweight2026-05-15: #17, Heavyweight2026-05-29: #17, Heavyweight2026-06-05: #17, Heavyweight2026-06-13: #17, Heavyweight2026-06-19: #17, Heavyweight2026-06-26: #18, Heavyweight2026-07-10: #17, Heavyweight2026-07-17: #18, Heavyweight2026-07-24: #20, Heavyweight2026-07-31: #18, Heavyweight2026-08-07: #18, Heavyweight2026-08-14: #19, Heavyweight2026-08-21: #19, Heavyweight2026-08-28: #27, Heavyweight2026-09-04: #22, Heavyweight2026-09-11: #22, Heavyweight2026-09-18: #21, Heavyweight2026-09-25: #20, Heavyweight2026-09-26: #20, Heavyweight2026-10-03: #21, Heavyweight2026-10-10: #20, Heavyweight2026-10-17: #22, Heavyweight2026-10-24: #22, Heavyweight2026-10-31: #22, Heavyweight#22

Position on the registered v1.0 board at each weekly snapshot (C = title holder or reserved, drawn at the top; lower is better).

Predictive rating by bout

1,4001,5001,6001,7001,80020212022202320242025May 2019Oct 20262019-05-04: 1,424 (L vs Walt Harris)2019-10-05: 1,518 (W vs Tai Tuivasa)2020-02-29: 1,475 (L vs Marcin Tybura)2020-07-18: 1,529 (W vs Carlos Felipe)2021-02-20: 1,608 (W vs Jared Vanderaa)2021-06-19: 1,606 (W vs Aleksei Oleinik)2021-09-04: 1,563 (L vs Tom Aspinall)2022-03-05: 1,625 (W vs Greg Hardy)2022-08-06: 1,674 (W vs Augusto Sakai)2023-02-04: 1,735 (W vs Derrick Lewis)2023-09-02: 1,688 (L vs Ciryl Gane)2024-08-10: 1,736 (W vs Marcin Tybura)2025-01-18: 1,728 (L vs Jailton Almeida)2025-06-07: 1,669 (L vs Waldo Cortes Acosta)2026-02-21: 1,679 (W vs Ante Delija)2026-08-22: 1,626 (L vs Vitor Petrino)1,626

Rating after each UFC bout from the frozen predictive model (performance-adjusted Elo, data/processed/elo_history.csv; a debut starts at 1,500). The resume rating's history is not stored, so this is the predictive line, which is a different number from the resume rating in the header.

Trajectory

Recent performances are in line with the rating (-29 points).

ComponentPointsMeaning
Age component-7what fighters aged 31.8 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results-22his recency-weighted mean and trend over 16 bouts, shrunk toward zero; trend -7 points a year
Combined-29the rating's likely distance from his current performance level, in rating points
Readingin line with ratingahead of, in line with (within 30 points), or behind the rating

Performance relative to the rating, by age

-1.0-0.5+0.0+0.5+1.023242526272829303132332019-05-04 (age 24.3): L vs Walt Harris, residual -0.432019-10-05 (age 24.7): W vs Tai Tuivasa, residual +0.642020-02-29 (age 25.1): L vs Marcin Tybura, residual -0.232020-07-18 (age 25.5): W vs Carlos Felipe, residual +0.292021-02-20 (age 26.1): W vs Jared Vanderaa, residual +0.452021-06-19 (age 26.4): W vs Aleksei Oleinik, residual +0.172021-09-04 (age 26.6): L vs Tom Aspinall, residual -0.382022-03-05 (age 27.1): W vs Greg Hardy, residual +0.482022-08-06 (age 27.5): W vs Augusto Sakai, residual +0.492023-02-04 (age 28.0): W vs Derrick Lewis, residual +0.642023-09-02 (age 28.6): L vs Ciryl Gane, residual -0.282024-08-10 (age 29.5): W vs Marcin Tybura, residual +0.592025-01-18 (age 30.0): L vs Jailton Almeida, residual -0.322025-06-07 (age 30.4): L vs Waldo Cortes Acosta, residual -0.312026-02-21 (age 31.1): W vs Ante Delija, residual +0.022026-08-22 (age 31.6): L vs Vitor Petrino, residual -0.45-0.04

Each dot is one decided UFC bout at his age then: the performance score minus the rating's expectation, on the score's own scale from -1 to +1 (filled = win, hollow = loss; above zero is better than the rating implied; a finish as a slight favourite is about +0.45). The dashed line is the population curve for all fighters; the solid line is this fighter's own fitted level and trend as of the data date, weighted toward recent bouts. One unit sustained over many bouts corresponds to about 695 rating points; a single bout's residual is noisy.

Held-out evidence (walk-forward 2016 to 2026, EXP-2026-10-21-01): the age curve held in every test year; the individual component is a weak signal (correlation 0.06 with the next bout's residual; among fighters aged 33 or over, the lowest predicted quartile won 38% of next bouts against 53% expected, the highest 48% against 52%) and adds nothing to bout prediction beyond the shadow model. No board uses any of it: the rankings answer who has earned the place, not who wins next (EXP-2026-10-20-09). Method: src/mmalab/decline.py; settings: config/decline.yaml (expectation from the resume rating; one unit of residual is about 695 rating points).

Context flags

Descriptive only. Each line is a population fact about fighters like him, not a forecast for him; the register entries hold the measurements.

REAL v1.0 (registered method) · build c166ee8 · data through 2026-10-31 · page built 2026-11-06 · changelog. Independent fan research project built on public UFCStats data. Not affiliated with, sponsored or endorsed by UFC, Zuffa, LLC, TKO Group Holdings, or any athlete. All trademarks belong to their owners and are used only to identify athletes and events.