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HyunSung Park

Flyweight · REAL v1.0 (registered) #29; v1.1 (shadow) #28

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 29-30: the 10th to 90th percentile of his position across weight vectors drawn near the 70/30 weights. Rating 1,521, deviation 174: measured from 5 UFC bouts; a one-bout newcomer sits near 290.

Age 30 (born 1995-11-04) · Height 5 ft 7 in (170 cm) · Reach 66 in (168 cm) · Stance Orthodox · 379 days since last bout (2025-10-18) · Last five 3-2 · Streak L2

Why he is ranked here

Rating 1,521 is the division's 30th highest of 49 board fighters after an inactivity penalty of 4 points for 379 days without a bout; the ledger stands at -2.0 (less 1.0 for blowout losses, less 1.0 for other losses outside the top 5; losses count for three years); 0 quality wins in 15 years, 0 over top-10 opponents; no form penalty (3-2 last five). Score -0.12 = -0.07 (rating term, 70% weight) -0.05 (ledger term, 30% weight) -0.00 (form penalty); score order put him at #29.

TermValueDetail
Score-0.1270% rating term + 30% ledger term - form penalty
Rating term-0.07resume rating 1,521 (raw 1,525 less inactivity penalty 4), scaled against the division's interdecile range
Ledger term-0.05quality ledger -2.0: +0.0 QW +0.0 proof -1.0 blowout -1.0 weak
Form penalty0.00last five 3-2
Quality wins, 15 years00 over top-10 opponents, 0 over top-15
Placementscore order #29v1.0 (registered)
Shadow board v1.1#28score -0.19; score order #28

Rules, weights and worked examples: methodology.

All 5 UFC bouts

DateEventOpponentOpp. official rankResultMethodRoundModel p
2025-10-18UFC Fight Night: De Ridder vs. AllenBruno Silva#14Lsubmission3 (2:15)49%
2025-08-02UFC Fight Night: Taira vs. ParkTatsuro Taira#6Lsubmission2 (1:06)45%
2025-05-17UFC Fight Night: Burns vs. MoralesCarlos HernandezunrankedWsubmission1 (2:26)58%
2023-12-09UFC Fight Night: Song vs. GutierrezShannon RossunrankedWKO/TKO2 (3:59)77%
2023-02-04UFC Fight Night: Lewis vs. Spivac (title)SeungGuk ChoiunrankedWsubmission3 (3:11)50%

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

Output
Significant strikes landed per minute3.17(35th percentile at Flyweight)
Significant strike accuracy38%(14th percentile at Flyweight)
Knockdowns scored per 15 minutes0.70(82nd percentile at Flyweight)
Share of wins by finish100%(100th percentile at Flyweight)
Defence and damage
Significant strikes absorbed per minute2.89(31st percentile at Flyweight)
Significant strike defence57%(55th percentile at Flyweight)
Knockdowns suffered per 15 minutes1.05(96th percentile at Flyweight)
Significant strikes absorbed, career124(31st percentile at Flyweight)
KO/TKO losses0(51st percentile at Flyweight)
Submission losses2(90th percentile at Flyweight)
KO/TKO losses per bout over 10 years, each weighted down by the finisher's danger0.000(53rd percentile at Flyweight)
Grappling
Takedowns landed per 15 minutes1.05(41st percentile at Flyweight)
Takedown defence44%(9th percentile at Flyweight)
Share of cage time in control15%(51st percentile at Flyweight)
Share of significant strikes landed in the clinch or on the ground20%(63rd percentile at Flyweight)
Stylemixed (3.1 takedown attempts per 15 min; 15% control)
Career stage
Age31.0(49th percentile at Flyweight)
Age at UFC debut27.3(55th percentile at Flyweight)
Years since UFC debut3.7(61st percentile at Flyweight)
UFC bouts5(43rd percentile at Flyweight)
Cage time, minutes43(27th percentile at Flyweight)
Bouts per year, last three years1.3(39th percentile at Flyweight)
Days since last bout379(92nd percentile at Flyweight)

Board position since Oct 2023

C1020304020252026Oct 2023Oct 20262023-10-06: #12, Flyweight2023-10-13: #12, Flyweight2023-10-20: #12, Flyweight2023-11-03: #12, Flyweight2023-11-10: #12, Flyweight2023-11-17: #13, Flyweight2023-12-01: #13, Flyweight2023-12-08: #13, Flyweight2023-12-15: #10, Flyweight2024-01-12: #11, Flyweight2024-01-19: #11, Flyweight2024-02-02: #11, Flyweight2024-02-09: #11, Flyweight2024-02-16: #11, Flyweight2024-02-23: #11, Flyweight2024-03-01: #11, Flyweight2024-03-08: #12, Flyweight2024-03-15: #12, Flyweight2024-03-22: #12, Flyweight2024-03-29: #12, Flyweight2024-04-05: #12, Flyweight2024-04-12: #12, Flyweight2024-04-26: #11, Flyweight2024-05-03: #11, Flyweight2024-05-10: #11, Flyweight2024-05-17: #11, Flyweight2024-05-31: #11, Flyweight2024-06-07: #11, Flyweight2024-06-14: #11, Flyweight2024-06-21: #11, Flyweight2024-06-28: #11, Flyweight2024-07-12: #11, Flyweight2024-07-19: #11, Flyweight2024-07-26: #11, Flyweight2024-08-02: #11, Flyweight2024-08-09: #11, Flyweight2024-08-16: #11, Flyweight2024-08-23: #10, Flyweight2024-09-06: #10, Flyweight2024-09-13: #10, Flyweight2024-09-27: #10, Flyweight2024-10-04: #10, Flyweight2024-10-11: #10, Flyweight2024-10-18: #11, Flyweight2024-10-25: #11, Flyweight2024-11-01: #11, Flyweight2024-11-08: #11, Flyweight2024-11-15: #11, Flyweight2024-11-22: #11, Flyweight2024-12-06: #12, Flyweight2024-12-13: #11, Flyweight2025-01-10: #11, Flyweight2025-01-17: #11, Flyweight2025-01-31: #10, Flyweight2025-02-07: #10, Flyweight2025-02-14: #10, Flyweight2025-02-21: #10, Flyweight2025-02-28: #10, Flyweight2025-03-07: #11, Flyweight2025-03-14: #13, Flyweight2025-03-21: #14, Flyweight2025-03-28: #15, Flyweight2025-04-04: #15, Flyweight2025-04-11: #15, Flyweight2025-04-25: #15, Flyweight2025-05-02: #15, Flyweight2025-05-09: #15, Flyweight2025-05-16: #15, Flyweight2025-05-30: #9, Flyweight2025-06-06: #9, Flyweight2025-06-13: #9, Flyweight2025-06-20: #9, Flyweight2025-06-27: #9, Flyweight2025-07-11: #10, Flyweight2025-07-18: #10, Flyweight2025-07-25: #10, Flyweight2025-08-01: #10, Flyweight2025-08-08: #13, Flyweight2025-08-15: #13, Flyweight2025-08-22: #14, Flyweight2025-09-05: #14, Flyweight2025-09-12: #14, Flyweight2025-09-26: #14, Flyweight2025-10-03: #14, Flyweight2025-10-10: #14, Flyweight2025-10-17: #14, Flyweight2025-10-24: #31, Flyweight2025-10-31: #31, Flyweight2025-11-07: #31, Flyweight2025-11-14: #31, Flyweight2025-11-21: #31, Flyweight2025-12-05: #30, Flyweight2025-12-12: #29, Flyweight2026-01-23: #28, Flyweight2026-01-30: #28, Flyweight2026-02-06: #28, Flyweight2026-02-20: #28, Flyweight2026-02-27: #28, Flyweight2026-03-06: #30, Flyweight2026-03-13: #30, Flyweight2026-03-20: #30, Flyweight2026-03-27: #30, Flyweight2026-04-03: #30, Flyweight2026-04-10: #30, Flyweight2026-04-17: #30, Flyweight2026-04-24: #30, Flyweight2026-05-01: #31, Flyweight2026-05-08: #31, Flyweight2026-05-15: #30, Flyweight2026-05-29: #29, Flyweight2026-06-05: #30, Flyweight2026-06-13: #30, Flyweight2026-06-19: #30, Flyweight2026-06-26: #30, Flyweight2026-07-10: #29, Flyweight2026-07-17: #28, Flyweight2026-07-24: #28, Flyweight2026-07-31: #27, Flyweight2026-08-07: #27, Flyweight2026-08-14: #27, Flyweight2026-08-21: #27, Flyweight2026-08-28: #27, Flyweight2026-09-04: #28, Flyweight2026-09-11: #29, Flyweight2026-09-18: #29, Flyweight2026-09-25: #29, Flyweight2026-09-26: #29, Flyweight2026-10-03: #29, Flyweight2026-10-10: #29, Flyweight2026-10-17: #28, Flyweight2026-10-24: #30, Flyweight2026-10-31: #29, Flyweight#29

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

1,4501,5001,5501,6001,650202420252026Feb 2023Oct 20262023-02-04: 1,542 (W vs SeungGuk Choi)2023-12-09: 1,536 (W vs Shannon Ross)2025-05-17: 1,605 (W vs Carlos Hernandez)2025-08-02: 1,539 (L vs Tatsuro Taira)2025-10-18: 1,478 (L vs Bruno Silva)1,478

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 (-6 points).

ComponentPointsMeaning
Age component+3what fighters aged 31.0 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results-9his recency-weighted mean and trend over 5 bouts, shrunk toward zero; trend -4 points a year
Combined-6the 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+1.0262728293031322023-02-04 (age 27.3): W vs SeungGuk Choi, residual +0.532023-12-09 (age 28.1): W vs Shannon Ross, residual +0.322025-05-17 (age 29.5): W vs Carlos Hernandez, residual +0.332025-08-02 (age 29.7): L vs Tatsuro Taira, residual -0.372025-10-18 (age 30.0): L vs Bruno Silva, residual -0.50-0.01

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.