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Yadier del Valle

Featherweight · REAL v1.0 (registered) #21; 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 19-22: the 10th to 90th percentile of his position across weight vectors drawn near the 70/30 weights. Rating 1,591, deviation 177: measured from 4 UFC bouts; a one-bout newcomer sits near 290.

Age 30 (born 1996-07-29) · Height 5 ft 9 in (175 cm) · Reach 69 in (175 cm) · Stance Southpaw · 85 days since last bout (2026-08-08) · Last five 3-1 · Streak W1

Why he is ranked here

Rating 1,591 is the division's 21st highest of 94 board fighters; the ledger stands at -0.8 (+0.2 from quality wins, less 1.0 for other losses outside the top 5; losses count for three years); 1 quality win in 15 years, 0 over top-10 opponents; no form penalty (3-1 last five). Score +0.19 = +0.18 (rating term, 70% weight) +0.02 (ledger term, 30% weight) -0.00 (form penalty); score order put him at #21.

TermValueDetail
Score+0.1970% rating term + 30% ledger term - form penalty
Rating term+0.18resume rating 1,591, scaled against the division's interdecile range
Ledger term+0.02quality ledger -0.8: +0.2 QW +0.0 proof -0.0 blowout -1.0 weak
Form penalty0.00last five 3-1
Quality wins, 15 years10 over top-10 opponents, 0 over top-15
Placementscore order #21v1.0 (registered)
Shadow board v1.1#28score +0.09; score order #28

Rules, weights and worked examples: methodology.

All 4 UFC bouts

DateEventOpponentOpp. official rankResultMethodRoundModel p
2026-08-08UFC Fight Night: Gamrot vs. SalkilldDarren ElkinsunrankedWKO/TKO1 (0:35)64%
2026-02-21UFC Fight Night: Strickland vs. HernandezJordan LeavittunrankedLunanimous decision3 (5:00)51%
2025-11-01UFC Fight Night: Garcia vs. OnamaIsaac DulgarianunrankedWsubmission1 (3:41)37%
2025-05-17UFC Fight Night: Burns vs. MoralesConnor MatthewsunrankedWsubmission1 (2:54)70%

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

Output
Significant strikes landed per minute1.26(3rd percentile at Featherweight)
Significant strike accuracy46%(40th percentile at Featherweight)
Knockdowns scored per 15 minutes0.68(74th percentile at Featherweight)
Share of wins by finish100%(100th percentile at Featherweight)
Defence and damage
Significant strikes absorbed per minute0.90(3rd percentile at Featherweight)
Significant strike defence66%(94th percentile at Featherweight)
Knockdowns suffered per 15 minutes0.00(36th percentile at Featherweight)
Significant strikes absorbed, career20(11th percentile at Featherweight)
KO/TKO losses0(41st percentile at Featherweight)
Submission losses0(77th percentile at Featherweight)
KO/TKO losses per bout over 10 years, each weighted down by the finisher's danger0.000(41st percentile at Featherweight)
Grappling
Takedowns landed per 15 minutes0.68(37th percentile at Featherweight)
Takedown defence60%(44th percentile at Featherweight)
Share of cage time in control30%(85th percentile at Featherweight)
Share of significant strikes landed in the clinch or on the ground43%(90th percentile at Featherweight)
Stylemixed (0.7 takedown attempts per 15 min; 30% control)
Career stage
Age30.3(39th percentile at Featherweight)
Age at UFC debut28.8(60th percentile at Featherweight)
Years since UFC debut1.5(37th percentile at Featherweight)
UFC bouts4(53rd percentile at Featherweight)
Cage time, minutes22(35th percentile at Featherweight)
Bouts per year, last three years2.7(91st percentile at Featherweight)
Days since last bout85(43rd percentile at Featherweight)

Board position since Oct 2023

C1020304020252026Oct 2023Oct 20262025-05-30: #35, Featherweight2025-06-06: #36, Featherweight2025-06-13: #37, Featherweight2025-06-20: #36, Featherweight2025-06-27: #35, Featherweight2025-07-11: #33, Featherweight2025-07-18: #33, Featherweight2025-07-25: #33, Featherweight2025-08-01: #35, Featherweight2025-08-08: #35, Featherweight2025-08-15: #35, Featherweight2025-08-22: #35, Featherweight2025-09-05: #36, Featherweight2025-09-12: #36, Featherweight2025-09-26: #36, Featherweight2025-10-03: #36, Featherweight2025-10-10: #34, Featherweight2025-10-17: #33, Featherweight2025-10-24: #31, Featherweight2025-10-31: #30, Featherweight2025-11-07: #20, Featherweight2025-11-14: #20, Featherweight2025-11-21: #20, Featherweight2025-12-05: #20, Featherweight2025-12-12: #22, Featherweight2026-01-23: #21, Featherweight2026-01-30: #22, Featherweight2026-02-06: #22, Featherweight2026-02-20: #22, Featherweight2026-02-27: #29, Featherweight2026-03-06: #30, Featherweight2026-03-13: #31, Featherweight2026-03-20: #33, Featherweight2026-03-27: #31, Featherweight2026-04-03: #32, Featherweight2026-04-10: #33, Featherweight2026-04-17: #33, Featherweight2026-04-24: #35, Featherweight2026-05-01: #35, Featherweight2026-05-08: #34, Featherweight2026-05-15: #33, Featherweight2026-05-29: #34, Featherweight2026-06-05: #35, Featherweight2026-06-13: #34, Featherweight2026-06-19: #34, Featherweight2026-06-26: #35, Featherweight2026-07-10: #34, Featherweight2026-07-17: #34, Featherweight2026-07-24: #33, Featherweight2026-07-31: #33, Featherweight2026-08-07: #33, Featherweight2026-08-14: #22, Featherweight2026-08-21: #22, Featherweight2026-08-28: #24, Featherweight2026-09-04: #24, Featherweight2026-09-11: #24, Featherweight2026-09-18: #23, Featherweight2026-09-25: #22, Featherweight2026-09-26: #22, Featherweight2026-10-03: #22, Featherweight2026-10-10: #21, Featherweight2026-10-17: #21, Featherweight2026-10-24: #22, Featherweight2026-10-31: #21, Featherweight#21

Position on the registered v1.0 board at each weekly snapshot (C = title holder or reserved, drawn at the top; lower is better). Absent from 68 of 132 snapshots (gaps in the line).

Predictive rating by bout

1,5001,5501,6001,6501,7002026May 2025Oct 20262025-05-17: 1,536 (W vs Connor Matthews)2025-11-01: 1,622 (W vs Isaac Dulgarian)2026-02-21: 1,586 (L vs Jordan Leavitt)2026-08-08: 1,656 (W vs Darren Elkins)1,656

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 run about 34 points ahead of the rating: fighters this age typically run 12 points ahead of their rating, and his own recent results put him a further 22 points ahead.

ComponentPointsMeaning
Age component+12what fighters aged 30.3 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results+22his recency-weighted mean and trend over 4 bouts, shrunk toward zero; trend +0 points a year
Combined+34the rating's likely distance from his current performance level, in rating points
Readingahead of 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+1.0282930312025-05-17 (age 28.8): W vs Connor Matthews, residual +0.342025-11-01 (age 29.3): W vs Isaac Dulgarian, residual +0.592026-02-21 (age 29.6): L vs Jordan Leavitt, residual -0.112026-08-08 (age 30.0): W vs Darren Elkins, residual +0.59+0.05

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.