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Mackenzie Dern

Women's Strawweight · REAL v1.0 (registered) champion; v1.1 (shadow) champion

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).

Rating 1,651, deviation 111: measured from 17 UFC bouts; a one-bout newcomer sits near 290.

Age 33 (born 1993-03-24) · Height 5 ft 4 in (163 cm) · Reach 63 in (160 cm) · Stance Orthodox · 78 days since last bout (2026-08-15) · Last five 4-1 · Streak W4

Why she is ranked here

Rating 1,651 is the division's 4th highest of 49 board fighters; the ledger stands at +7.0 (+6.5 from quality wins, +0.5 from close losses to top-5 fighters; losses count for three years); 8 quality wins in 15 years, 6 over top-10 opponents, which makes her entrenched; no form penalty (4-1 last five). Score +0.75 = +0.34 (rating term, 70% weight) +0.40 (ledger term, 30% weight) -0.00 (form penalty); she holds the title and sits above the numbered board.

TermValueDetail
Score+0.7570% rating term + 30% ledger term - form penalty
Rating term+0.34resume rating 1,651, scaled against the division's interdecile range
Ledger term+0.40quality ledger +7.0: +6.5 QW +0.5 proof -0.0 blowout -0.0 weak
Form penalty0.00last five 4-1
Quality wins, 15 years86 over top-10 opponents, 8 over top-15; entrenched
Placementtitle holderv1.0 (registered)
Shadow board v1.1championscore +0.71; title holder

Rules, weights and worked examples: methodology.

Last ten bouts

DateEventOpponentOpp. official rankResultMethodRoundModel p
2026-08-15UFC 330: Makhachev vs. Machado Garry (title)Gillian Robertson#5Wunanimous decision5 (5:00)45%
2025-10-25UFC 321: Aspinall vs. Gane (title)Virna Jandiroba#1Wunanimous decision5 (5:00)39%
2025-01-11UFC Fight Night: Dern vs. Ribas 2Amanda Ribas#8Wsubmission3 (4:56)40%
2024-08-03UFC Fight Night: Sandhagen vs. NurmagomedovLoopy Godinez#10Wunanimous decision3 (5:00)41%
2024-02-17UFC 298: Volkanovski vs. TopuriaAmanda Lemos#3Lunanimous decision3 (5:00)39%
2023-11-11UFC 295: Prochazka vs. PereiraJessica Andrade#5LKO/TKO2 (3:15)56%
2023-05-20UFC Fight Night: Dern vs. HillAngela Hill#14Wunanimous decision5 (5:00)44%
2022-10-01UFC Fight Night: Dern vs. YanYan Xiaonan#6Lmajority decision5 (5:00)51%
2022-04-09UFC 273: Volkanovski vs. The Korean ZombieTecia Pennington#7Wsplit decision3 (5:00)40%
2021-10-09UFC Fight Night: Dern vs. RodriguezMarina Rodriguez#6Lunanimous decision5 (5:00)51%

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 her (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 49 board fighters at Women's Strawweight at or below this value; high is a position in the division, not a verdict.

Output
Significant strikes landed per minute3.38(31st percentile at Women's Strawweight)
Significant strike accuracy41%(31st percentile at Women's Strawweight)
Knockdowns scored per 15 minutes0.12(63rd percentile at Women's Strawweight)
Share of wins by finish42%(53rd percentile at Women's Strawweight)
Defence and damage
Significant strikes absorbed per minute3.74(47th percentile at Women's Strawweight)
Significant strike defence53%(37th percentile at Women's Strawweight)
Knockdowns suffered per 15 minutes0.36(90th percentile at Women's Strawweight)
Significant strikes absorbed, career941(94th percentile at Women's Strawweight)
KO/TKO losses1 (last 2023-11-11, 1,086 days ago)(88th percentile at Women's Strawweight)
Submission losses0(63rd percentile at Women's Strawweight)
KO/TKO losses per bout over 10 years, each weighted down by the finisher's danger0.025(61st percentile at Women's Strawweight)
Grappling
Takedowns landed per 15 minutes1.07(49th percentile at Women's Strawweight)
Takedown defence41%(13th percentile at Women's Strawweight)
Share of cage time in control30%(82nd percentile at Women's Strawweight)
Share of significant strikes landed in the clinch or on the ground26%(69th percentile at Women's Strawweight)
Stylemixed (4.9 takedown attempts per 15 min; 30% control)
Career stage
Age33.6(60th percentile at Women's Strawweight)
Age at UFC debut24.9(23rd percentile at Women's Strawweight)
Years since UFC debut8.7(82nd percentile at Women's Strawweight)
UFC bouts17(90th percentile at Women's Strawweight)
Cage time, minutes252(94th percentile at Women's Strawweight)
Bouts per year, last three years2.0(80th percentile at Women's Strawweight)
Days since last bout78(41st percentile at Women's Strawweight)

Board position since Oct 2023

C5101520252026Oct 2023Oct 20262023-10-06: #10, Women's Strawweight2023-10-13: #10, Women's Strawweight2023-10-20: #10, Women's Strawweight2023-11-03: #10, Women's Strawweight2023-11-10: #10, Women's Strawweight2023-11-17: #13, Women's Strawweight2023-12-01: #13, Women's Strawweight2023-12-08: #12, Women's Strawweight2023-12-15: #12, Women's Strawweight2024-01-12: #13, Women's Strawweight2024-01-19: #13, Women's Strawweight2024-02-02: #12, Women's Strawweight2024-02-09: #12, Women's Strawweight2024-02-16: #12, Women's Strawweight2024-02-23: #12, Women's Strawweight2024-03-01: #12, Women's Strawweight2024-03-08: #12, Women's Strawweight2024-03-15: #12, Women's Strawweight2024-03-22: #12, Women's Strawweight2024-03-29: #11, Women's Strawweight2024-04-05: #11, Women's Strawweight2024-04-12: #11, Women's Strawweight2024-04-26: #11, Women's Strawweight2024-05-03: #11, Women's Strawweight2024-05-10: #11, Women's Strawweight2024-05-17: #12, Women's Strawweight2024-05-31: #12, Women's Strawweight2024-06-07: #12, Women's Strawweight2024-06-14: #12, Women's Strawweight2024-06-21: #12, Women's Strawweight2024-06-28: #12, Women's Strawweight2024-07-12: #12, Women's Strawweight2024-07-19: #12, Women's Strawweight2024-07-26: #12, Women's Strawweight2024-08-02: #12, Women's Strawweight2024-08-09: #11, Women's Strawweight2024-08-16: #11, Women's Strawweight2024-08-23: #11, Women's Strawweight2024-09-06: #12, Women's Strawweight2024-09-13: #12, Women's Strawweight2024-09-27: #12, Women's Strawweight2024-10-04: #12, Women's Strawweight2024-10-11: #12, Women's Strawweight2024-10-18: #12, Women's Strawweight2024-10-25: #12, Women's Strawweight2024-11-01: #12, Women's Strawweight2024-11-08: #12, Women's Strawweight2024-11-15: #12, Women's Strawweight2024-11-22: #12, Women's Strawweight2024-12-06: #12, Women's Strawweight2024-12-13: #12, Women's Strawweight2025-01-10: #12, Women's Strawweight2025-01-17: #5, Women's Strawweight2025-01-31: #4, Women's Strawweight2025-02-07: #4, Women's Strawweight2025-02-14: #3, Women's Strawweight2025-02-21: #2, Women's Strawweight2025-02-28: #2, Women's Strawweight2025-03-07: #2, Women's Strawweight2025-03-14: #2, Women's Strawweight2025-03-21: #2, Women's Strawweight2025-03-28: #2, Women's Strawweight2025-04-04: #2, Women's Strawweight2025-04-11: #3, Women's Strawweight2025-04-25: #2, Women's Strawweight2025-05-02: #2, Women's Strawweight2025-05-09: #3, Women's Strawweight2025-05-16: #2, Women's Strawweight2025-05-30: #2, Women's Strawweight2025-06-06: #2, Women's Strawweight2025-06-13: #2, Women's Strawweight2025-06-20: #2, Women's Strawweight2025-06-27: #2, Women's Strawweight2025-07-11: #2, Women's Strawweight2025-07-18: #2, Women's Strawweight2025-07-25: #2, Women's Strawweight2025-08-01: #2, Women's Strawweight2025-08-08: #2, Women's Strawweight2025-08-15: #3, Women's Strawweight2025-08-22: #3, Women's Strawweight2025-09-05: #3, Women's Strawweight2025-09-12: #3, Women's Strawweight2025-09-26: #4, Women's Strawweight2025-10-03: #3, Women's Strawweight2025-10-10: #3, Women's Strawweight2025-10-17: #3, Women's Strawweight2025-10-24: #3, Women's Strawweight2025-10-31: title holder, Women's Strawweight2025-11-07: title holder, Women's Strawweight2025-11-14: title holder, Women's Strawweight2025-11-21: title holder, Women's Strawweight2025-12-05: title holder, Women's Strawweight2025-12-12: title holder, Women's Strawweight2026-01-23: title holder, Women's Strawweight2026-01-30: title holder, Women's Strawweight2026-02-06: title holder, Women's Strawweight2026-02-20: title holder, Women's Strawweight2026-02-27: title holder, Women's Strawweight2026-03-06: title holder, Women's Strawweight2026-03-13: title holder, Women's Strawweight2026-03-20: title holder, Women's Strawweight2026-03-27: title holder, Women's Strawweight2026-04-03: title holder, Women's Strawweight2026-04-10: title holder, Women's Strawweight2026-04-17: title holder, Women's Strawweight2026-04-24: title holder, Women's Strawweight2026-05-01: title holder, Women's Strawweight2026-05-08: title holder, Women's Strawweight2026-05-15: title holder, Women's Strawweight2026-05-29: title holder, Women's Strawweight2026-06-05: title holder, Women's Strawweight2026-06-13: title holder, Women's Strawweight2026-06-19: title holder, Women's Strawweight2026-06-26: title holder, Women's Strawweight2026-07-10: title holder, Women's Strawweight2026-07-17: title holder, Women's Strawweight2026-07-24: title holder, Women's Strawweight2026-07-31: title holder, Women's Strawweight2026-08-07: title holder, Women's Strawweight2026-08-14: title holder, Women's Strawweight2026-08-21: title holder, Women's Strawweight2026-08-28: title holder, Women's Strawweight2026-09-04: title holder, Women's Strawweight2026-09-11: title holder, Women's Strawweight2026-09-18: title holder, Women's Strawweight2026-09-25: title holder, Women's Strawweight2026-09-26: title holder, Women's Strawweight2026-10-03: title holder, Women's Strawweight2026-10-10: title holder, Women's Strawweight2026-10-17: title holder, Women's Strawweight2026-10-24: title holder, Women's Strawweight2026-10-31: title holder, Women's StrawweightC

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

1,4501,5001,5501,6001,6501,700202020212022202320242025Mar 2018Oct 20262018-03-03: 1,518 (W vs Ashley Yoder)2018-05-12: 1,594 (W vs Amanda Cooper)2019-10-12: 1,512 (L vs Amanda Ribas)2020-05-30: 1,490 (W vs Hannah Cifers)2020-09-19: 1,576 (W vs Randa Markos)2020-12-12: 1,608 (W vs Virna Jandiroba)2021-04-10: 1,650 (W vs Nina Nunes)2021-10-09: 1,602 (L vs Marina Rodriguez)2022-04-09: 1,612 (W vs Tecia Pennington)2022-10-01: 1,588 (L vs Yan Xiaonan)2023-05-20: 1,641 (W vs Angela Hill)2023-11-11: 1,590 (L vs Jessica Andrade)2024-02-17: 1,575 (L vs Amanda Lemos)2024-08-03: 1,597 (W vs Loopy Godinez)2025-01-11: 1,625 (W vs Amanda Ribas)2025-10-25: 1,642 (W vs Virna Jandiroba)2026-08-15: 1,671 (W vs Gillian Robertson)1,671

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 (+18 points).

ComponentPointsMeaning
Age component-8what fighters aged 33.6 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results+25her recency-weighted mean and trend over 17 bouts, shrunk toward zero; trend +3 points a year
Combined+18the rating's likely distance from her 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+1.02425262728293031323334352018-03-03 (age 24.9): W vs Ashley Yoder, residual +0.082018-05-12 (age 25.1): W vs Amanda Cooper, residual +0.422019-10-12 (age 26.6): L vs Amanda Ribas, residual -0.472020-05-30 (age 27.2): W vs Hannah Cifers, residual +0.382020-09-19 (age 27.5): W vs Randa Markos, residual +0.402020-12-12 (age 27.7): W vs Virna Jandiroba, residual +0.072021-04-10 (age 28.0): W vs Nina Nunes, residual +0.502021-10-09 (age 28.5): L vs Marina Rodriguez, residual -0.462022-04-09 (age 29.0): W vs Tecia Pennington, residual +0.032022-10-01 (age 29.5): L vs Yan Xiaonan, residual -0.192023-05-20 (age 30.2): W vs Angela Hill, residual +0.372023-11-11 (age 30.6): L vs Jessica Andrade, residual -0.432024-02-17 (age 30.9): L vs Amanda Lemos, residual -0.052024-08-03 (age 31.4): W vs Loopy Godinez, residual +0.062025-01-11 (age 31.8): W vs Amanda Ribas, residual +0.502025-10-25 (age 32.6): W vs Virna Jandiroba, residual +0.192026-08-15 (age 33.4): W vs Gillian Robertson, residual +0.26+0.03

Each dot is one decided UFC bout at her 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 her, not a forecast for her; 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.