Kevin Vallejos

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 7-7: the 10th to 90th percentile of his position across weight vectors drawn near the 70/30 weights (the position does not depend on the weights). Rating 1,657, deviation 174: measured from 4 UFC bouts; a one-bout newcomer sits near 290.

Age 24 (born 2001-12-08) · Height 5 ft 7 in (170 cm) · Reach 68 in (173 cm) · Stance Switch · 232 days since last bout (2026-03-14) · Last five 4-0 · Streak W4

Why he is ranked here

Rating 1,657 is the division's 11th highest of 94 board fighters; the ledger stands at +1.0 (+1.0 from quality wins; losses count for three years); 2 quality wins in 15 years, 0 over top-10 opponents; no form penalty (4-0 last five). Score +0.52 = +0.37 (rating term, 70% weight) +0.15 (ledger term, 30% weight) -0.00 (form penalty); score order put him at #7.

Term	Value	Detail
Score	+0.52	70% rating term + 30% ledger term - form penalty
Rating term	+0.37	resume rating 1,657, scaled against the division's interdecile range
Ledger term	+0.15	quality ledger +1.0: +1.0 QW +0.0 proof -0.0 blowout -0.0 weak
Form penalty	0.00	last five 4-0
Quality wins, 15 years	2	0 over top-10 opponents, 2 over top-15
Placement	score order #7	v1.0 (registered)
Shadow board v1.1	#9	score +0.51; score order #9

All 4 UFC bouts

Date	Event	Opponent	Opp. official rank	Result	Method	Round	Model p
2026-03-14	UFC Fight Night: Emmett vs. Vallejos	Josh Emmett	#11	W	KO/TKO	1 (3:33)	55%
2025-12-13	UFC Fight Night: Royval vs. Kape	Giga Chikadze	#15	W	KO/TKO	2 (1:29)	40%
2025-08-02	UFC Fight Night: Taira vs. Park	Danny Silva	unranked	W	unanimous decision	3 (5:00)	52%
2025-03-15	UFC Fight Night: Vettori vs. Dolidze 2	SeungWoo Choi	unranked	W	KO/TKO	1 (3:09)	53%

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 minute	5.68	(83rd percentile at Featherweight)
Significant strike accuracy	47%	(43rd percentile at Featherweight)
Knockdowns scored per 15 minutes	2.13	(96th percentile at Featherweight)
Share of wins by finish	75%	(65th percentile at Featherweight)
Defence and damage
Significant strikes absorbed per minute	3.55	(39th percentile at Featherweight)
Significant strike defence	59%	(71st percentile at Featherweight)
Knockdowns suffered per 15 minutes	0.00	(36th percentile at Featherweight)
Significant strikes absorbed, career	100	(35th percentile at Featherweight)
KO/TKO losses	0	(41st percentile at Featherweight)
Submission losses	0	(77th percentile at Featherweight)
KO/TKO losses per bout over 10 years, each weighted down by the finisher's danger	0.000	(41st percentile at Featherweight)
Grappling
Takedowns landed per 15 minutes	1.06	(49th percentile at Featherweight)
Takedown defence	90%	(92nd percentile at Featherweight)
Share of cage time in control	12%	(47th percentile at Featherweight)
Share of significant strikes landed in the clinch or on the ground	24%	(70th percentile at Featherweight)
Style	mixed (3.2 takedown attempts per 15 min; 12% control)
Career stage
Age	24.9	(6th percentile at Featherweight)
Age at UFC debut	23.3	(3rd percentile at Featherweight)
Years since UFC debut	1.6	(39th percentile at Featherweight)
UFC bouts	4	(53rd percentile at Featherweight)
Cage time, minutes	28	(40th percentile at Featherweight)
Bouts per year, last three years	2.5	(86th percentile at Featherweight)
Days since last bout	232	(79th percentile at Featherweight)

Board position since Oct 2023

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 60 of 132 snapshots (gaps in the line).

Predictive rating by bout

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 75 points ahead of the rating: fighters this age typically run 49 points ahead of their rating, and his own recent results put him a further 26 points ahead.

Component	Points	Meaning
Age component	+49	what fighters aged 24.9 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results	+26	his recency-weighted mean and trend over 4 bouts, shrunk toward zero; trend +0 points a year
Combined	+75	the rating's likely distance from his current performance level, in rating points
Reading	ahead of rating	ahead of, in line with (within 30 points), or behind the rating

Performance relative to the rating, by age

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.