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Christian Leroy Duncan

Middleweight · REAL v1.0 (registered) #10; v1.1 (shadow) #9

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 9-10: the 10th to 90th percentile of his position across weight vectors drawn near the 70/30 weights. Rating 1,677, deviation 121: measured from 11 UFC bouts; a one-bout newcomer sits near 290.

Age 31 (born 1995-07-24) · Height 6 ft 2 in (188 cm) · Reach 79 in (201 cm) · Stance Switch · 22 days since last bout (2026-10-10) · Last five 4-1 · Streak L1

Why he is ranked here

Rating 1,677 is the division's 10th highest of 79 board fighters; the ledger stands at +1.2 (+1.8 from quality wins, +0.5 from close losses to top-5 fighters, less 1.0 for blowout losses; losses count for three years); 3 quality wins in 15 years, 1 over top-10 opponents; no form penalty (4-1 last five). Score +0.50 = +0.37 (rating term, 70% weight) +0.13 (ledger term, 30% weight) -0.00 (form penalty); score order put him at #10.

TermValueDetail
Score+0.5070% rating term + 30% ledger term - form penalty
Rating term+0.37resume rating 1,677, scaled against the division's interdecile range
Ledger term+0.13quality ledger +1.2: +1.8 QW +0.5 proof -1.0 blowout -0.0 weak
Form penalty0.00last five 4-1
Quality wins, 15 years31 over top-10 opponents, 2 over top-15
Placementscore order #10v1.0 (registered)
Shadow board v1.1#9score +0.51; score order #9

Rules, weights and worked examples: methodology.

Last ten bouts

DateEventOpponentOpp. official rankResultMethodRoundModel p
2026-10-10UFC Fight Night: Allen vs. DuncanBrendan Allen#4Lsubmission5 (2:46)57%
2026-07-18UFC Fight Night: Du Plessis vs. UsmanJared Cannonier#10Wunanimous decision3 (5:00)54%
2026-03-21UFC Fight Night: Evloev vs. MurphyRoman Dolidze#11Wunanimous decision3 (5:00)48%
2025-11-08UFC Fight Night: Bonfim vs. BrownMarco TuliounrankedWKO/TKO2 (3:20)53%
2025-08-09UFC Fight Night: Dolidze vs. HernandezEryk AndersunrankedWKO/TKO1 (3:53)61%
2025-03-22UFC Fight Night: Edwards vs. BradyAndrey PulyaevunrankedWunanimous decision3 (5:00)66%
2024-07-27UFC 304: Edwards vs. Muhammad 2Gregory RodriguesunrankedLunanimous decision3 (5:00)47%
2024-03-02UFC Fight Night: Rozenstruik vs. GazievClaudio RibeirounrankedWKO/TKO2 (1:57)56%
2023-11-18UFC Fight Night: Allen vs. CraigDenis TiuliulinunrankedWKO/TKO2 (4:24)68%
2023-06-17UFC Fight Night: Vettori vs. CannonierArmen PetrosyanunrankedLunanimous decision3 (5:00)46%

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 79 board fighters at Middleweight at or below this value; high is a position in the division, not a verdict.

Output
Significant strikes landed per minute4.49(65th percentile at Middleweight)
Significant strike accuracy58%(84th percentile at Middleweight)
Knockdowns scored per 15 minutes0.35(58th percentile at Middleweight)
Share of wins by finish62%(42nd percentile at Middleweight)
Defence and damage
Significant strikes absorbed per minute2.34(20th percentile at Middleweight)
Significant strike defence54%(63rd percentile at Middleweight)
Knockdowns suffered per 15 minutes0.00(34th percentile at Middleweight)
Significant strikes absorbed, career300(61st percentile at Middleweight)
KO/TKO losses0(39th percentile at Middleweight)
Submission losses1(87th percentile at Middleweight)
KO/TKO losses per bout over 10 years, each weighted down by the finisher's danger0.000(39th percentile at Middleweight)
Grappling
Takedowns landed per 15 minutes0.35(24th percentile at Middleweight)
Takedown defence59%(36th percentile at Middleweight)
Share of cage time in control20%(57th percentile at Middleweight)
Share of significant strikes landed in the clinch or on the ground25%(68th percentile at Middleweight)
Stylemixed (1.8 takedown attempts per 15 min; 20% control)
Career stage
Age31.3(32nd percentile at Middleweight)
Age at UFC debut27.6(46th percentile at Middleweight)
Years since UFC debut3.6(52nd percentile at Middleweight)
UFC bouts11(72nd percentile at Middleweight)
Cage time, minutes128(72nd percentile at Middleweight)
Bouts per year, last three years3.0(92nd percentile at Middleweight)
Days since last bout22(16th percentile at Middleweight)

Board position since Oct 2023

C1020304020252026Oct 2023Oct 20262023-10-06: #34, Middleweight2023-10-13: #35, Middleweight2023-10-20: #34, Middleweight2023-11-03: #35, Middleweight2023-11-10: #35, Middleweight2023-11-17: #35, Middleweight2023-12-01: #28, Middleweight2023-12-08: #28, Middleweight2023-12-15: #28, Middleweight2024-01-12: #27, Middleweight2024-01-19: #27, Middleweight2024-02-02: #28, Middleweight2024-02-09: #28, Middleweight2024-02-16: #27, Middleweight2024-02-23: #27, Middleweight2024-03-01: #27, Middleweight2024-03-08: #22, Middleweight2024-03-15: #23, Middleweight2024-03-22: #23, Middleweight2024-03-29: #23, Middleweight2024-04-05: #24, Middleweight2024-04-12: #23, Middleweight2024-04-26: #23, Middleweight2024-05-03: #23, Middleweight2024-05-10: #23, Middleweight2024-05-17: #22, Middleweight2024-05-31: #22, Middleweight2024-06-07: #21, Middleweight2024-06-14: #21, Middleweight2024-06-21: #21, Middleweight2024-06-28: #22, Middleweight2024-07-12: #22, Middleweight2024-07-19: #22, Middleweight2024-07-26: #22, Middleweight2024-08-02: #31, Middleweight2024-08-09: #31, Middleweight2024-08-16: #31, Middleweight2024-08-23: #31, Middleweight2024-09-06: #31, Middleweight2024-09-13: #31, Middleweight2024-09-27: #31, Middleweight2024-10-04: #31, Middleweight2024-10-11: #32, Middleweight2024-10-18: #32, Middleweight2024-10-25: #32, Middleweight2024-11-01: #34, Middleweight2024-11-08: #34, Middleweight2024-11-15: #34, Middleweight2024-11-22: #34, Middleweight2024-12-06: #34, Middleweight2024-12-13: #34, Middleweight2025-01-10: #34, Middleweight2025-01-17: #35, Middleweight2025-01-31: #36, Middleweight2025-02-07: #36, Middleweight2025-02-14: #36, Middleweight2025-02-21: #36, Middleweight2025-02-28: #37, Middleweight2025-03-07: #37, Middleweight2025-03-14: #37, Middleweight2025-03-21: #38, Middleweight2025-03-28: #31, Middleweight2025-04-04: #31, Middleweight2025-04-11: #31, Middleweight2025-04-25: #31, Middleweight2025-05-02: #31, Middleweight2025-05-09: #33, Middleweight2025-05-16: #33, Middleweight2025-05-30: #33, Middleweight2025-06-06: #33, Middleweight2025-06-13: #34, Middleweight2025-06-20: #33, Middleweight2025-06-27: #32, Middleweight2025-07-11: #30, Middleweight2025-07-18: #30, Middleweight2025-07-25: #30, Middleweight2025-08-01: #30, Middleweight2025-08-08: #30, Middleweight2025-08-15: #18, Middleweight2025-08-22: #19, Middleweight2025-09-05: #20, Middleweight2025-09-12: #21, Middleweight2025-09-26: #21, Middleweight2025-10-03: #21, Middleweight2025-10-10: #21, Middleweight2025-10-17: #21, Middleweight2025-10-24: #21, Middleweight2025-10-31: #21, Middleweight2025-11-07: #21, Middleweight2025-11-14: #17, Middleweight2025-11-21: #18, Middleweight2025-12-05: #18, Middleweight2025-12-12: #18, Middleweight2026-01-23: #18, Middleweight2026-01-30: #18, Middleweight2026-02-06: #18, Middleweight2026-02-20: #18, Middleweight2026-02-27: #18, Middleweight2026-03-06: #18, Middleweight2026-03-13: #18, Middleweight2026-03-20: #18, Middleweight2026-03-27: #10, Middleweight2026-04-03: #10, Middleweight2026-04-10: #10, Middleweight2026-04-17: #10, Middleweight2026-04-24: #10, Middleweight2026-05-01: #10, Middleweight2026-05-08: #10, Middleweight2026-05-15: #10, Middleweight2026-05-29: #10, Middleweight2026-06-05: #10, Middleweight2026-06-13: #10, Middleweight2026-06-19: #10, Middleweight2026-06-26: #10, Middleweight2026-07-10: #10, Middleweight2026-07-17: #10, Middleweight2026-07-24: #10, Middleweight2026-07-31: #10, Middleweight2026-08-07: #10, Middleweight2026-08-14: #10, Middleweight2026-08-21: #10, Middleweight2026-08-28: #10, Middleweight2026-09-04: #10, Middleweight2026-09-11: #10, Middleweight2026-09-18: #10, Middleweight2026-09-25: #10, Middleweight2026-09-26: #10, Middleweight2026-10-03: #10, Middleweight2026-10-10: #10, Middleweight2026-10-17: #10, Middleweight2026-10-24: #10, Middleweight2026-10-31: #10, Middleweight#10

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

1,5001,5501,6001,6501,7001,7501,800202420252026Mar 2023Oct 20262023-03-18: 1,578 (W vs Dusko Todorovic)2023-06-17: 1,530 (L vs Armen Petrosyan)2023-11-18: 1,579 (W vs Denis Tiuliulin)2024-03-02: 1,664 (W vs Claudio Ribeiro)2024-07-27: 1,618 (L vs Gregory Rodrigues)2025-03-22: 1,647 (W vs Andrey Pulyaev)2025-08-09: 1,689 (W vs Eryk Anders)2025-11-08: 1,687 (W vs Marco Tulio)2026-03-21: 1,724 (W vs Roman Dolidze)2026-07-18: 1,760 (W vs Jared Cannonier)2026-10-10: 1,750 (L vs Brendan Allen)1,750

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 (+21 points).

ComponentPointsMeaning
Age component-1what fighters aged 31.3 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results+22his recency-weighted mean and trend over 11 bouts, shrunk toward zero; trend -0 points a year
Combined+21the 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+1.02728293031322023-03-18 (age 27.6): W vs Dusko Todorovic, residual +0.452023-06-17 (age 27.9): L vs Armen Petrosyan, residual -0.202023-11-18 (age 28.3): W vs Denis Tiuliulin, residual +0.342024-03-02 (age 28.6): W vs Claudio Ribeiro, residual +0.352024-07-27 (age 29.0): L vs Gregory Rodrigues, residual -0.332025-03-22 (age 29.7): W vs Andrey Pulyaev, residual +0.322025-08-09 (age 30.0): W vs Eryk Anders, residual +0.502025-11-08 (age 30.3): W vs Marco Tulio, residual +0.432026-03-21 (age 30.7): W vs Roman Dolidze, residual +0.242026-07-18 (age 31.0): W vs Jared Cannonier, residual +0.352026-10-10 (age 31.2): L vs Brendan Allen, residual -0.39+0.03

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.