Back to the boards · All fighter profiles

Rei Tsuruya

Flyweight · REAL v1.0 (registered) #16; v1.1 (shadow) #17

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 15-17: the 10th to 90th percentile of his position across weight vectors drawn near the 70/30 weights. Rating 1,555, deviation 178: measured from 4 UFC bouts; a one-bout newcomer sits near 290.

Age 24 (born 2002-06-22) · Height 5 ft 6 in (168 cm) · Reach 68 in (173 cm) · Stance Orthodox · 64 days since last bout (2026-08-29) · Last five 3-1 · Streak W2

Why he is ranked here

Rating 1,555 is the division's 19th highest of 49 board fighters; the ledger stands at -1.0 (less 1.0 for blowout losses; losses count for three years); 0 quality wins in 15 years, 0 over top-10 opponents; no form penalty (3-1 last five). Score +0.04 = +0.04 (rating term, 70% weight) +0.00 (ledger term, 30% weight) -0.00 (form penalty); score order put him at #16.

TermValueDetail
Score+0.0470% rating term + 30% ledger term - form penalty
Rating term+0.04resume rating 1,555, scaled against the division's interdecile range
Ledger term+0.00quality ledger -1.0: +0.0 QW +0.0 proof -1.0 blowout -0.0 weak
Form penalty0.00last five 3-1
Quality wins, 15 years00 over top-10 opponents, 0 over top-15
Placementscore order #16v1.0 (registered)
Shadow board v1.1#17score -0.06; score order #17

Rules, weights and worked examples: methodology.

All 4 UFC bouts

DateEventOpponentOpp. official rankResultMethodRoundModel p
2026-08-29UFC Fight Night: Nurmagomedov vs. SongKevin BorjasunrankedWsubmission1 (4:14)75%
2026-05-30UFC Fight Night: Song vs. FigueiredoLuis GuruleunrankedWsubmission1 (3:19)55%
2025-03-08UFC 313: Pereira vs. AnkalaevJoshua VanunrankedLunanimous decision3 (5:00)30%
2024-06-29UFC 303: Pereira vs. Prochazka 2Carlos HernandezunrankedWunanimous decision3 (5:00)58%

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 minute2.80(29th percentile at Flyweight)
Significant strike accuracy50%(78th percentile at Flyweight)
Knockdowns scored per 15 minutes0.00(33rd percentile at Flyweight)
Share of wins by finish67%(73rd percentile at Flyweight)
Defence and damage
Significant strikes absorbed per minute2.02(12th percentile at Flyweight)
Significant strike defence42%(4th percentile at Flyweight)
Knockdowns suffered per 15 minutes0.00(39th percentile at Flyweight)
Significant strikes absorbed, career76(20th percentile at Flyweight)
KO/TKO losses0(51st percentile at Flyweight)
Submission losses0(51st 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 minutes3.99(94th percentile at Flyweight)
Takedown defence50%(26th percentile at Flyweight)
Share of cage time in control44%(94th percentile at Flyweight)
Share of significant strikes landed in the clinch or on the ground65%(100th percentile at Flyweight)
Stylewrestler (14.4 takedown attempts per 15 min; 44% control)
Career stage
Age24.4(2nd percentile at Flyweight)
Age at UFC debut22.0(4th percentile at Flyweight)
Years since UFC debut2.3(33rd percentile at Flyweight)
UFC bouts4(37th percentile at Flyweight)
Cage time, minutes38(24th percentile at Flyweight)
Bouts per year, last three years1.7(53rd percentile at Flyweight)
Days since last bout64(45th percentile at Flyweight)

Board position since Oct 2023

C1020304020252026Oct 2023Oct 20262024-07-12: #20, Flyweight2024-07-19: #19, Flyweight2024-07-26: #19, Flyweight2024-08-02: #19, Flyweight2024-08-09: #19, Flyweight2024-08-16: #19, Flyweight2024-08-23: #20, Flyweight2024-09-06: #20, Flyweight2024-09-13: #20, Flyweight2024-09-27: #21, Flyweight2024-10-04: #21, Flyweight2024-10-11: #21, Flyweight2024-10-18: #23, Flyweight2024-10-25: #22, Flyweight2024-11-01: #22, Flyweight2024-11-08: #22, Flyweight2024-11-15: #22, Flyweight2024-11-22: #22, Flyweight2024-12-06: #24, Flyweight2024-12-13: #24, Flyweight2025-01-10: #23, Flyweight2025-01-17: #24, Flyweight2025-01-31: #24, Flyweight2025-02-07: #24, Flyweight2025-02-14: #24, Flyweight2025-02-21: #24, Flyweight2025-02-28: #24, Flyweight2025-03-07: #24, Flyweight2025-03-14: #31, Flyweight2025-03-21: #31, Flyweight2025-03-28: #31, Flyweight2025-04-04: #32, Flyweight2025-04-11: #32, Flyweight2025-04-25: #32, Flyweight2025-05-02: #32, Flyweight2025-05-09: #32, Flyweight2025-05-16: #32, Flyweight2025-05-30: #31, Flyweight2025-06-06: #31, Flyweight2025-06-13: #31, Flyweight2025-06-20: #31, Flyweight2025-06-27: #31, Flyweight2025-07-11: #31, Flyweight2025-07-18: #31, Flyweight2025-07-25: #32, Flyweight2025-08-01: #32, Flyweight2025-08-08: #31, Flyweight2025-08-15: #31, Flyweight2025-08-22: #32, Flyweight2025-09-05: #32, Flyweight2025-09-12: #32, Flyweight2025-09-26: #32, Flyweight2025-10-03: #32, Flyweight2025-10-10: #32, Flyweight2025-10-17: #33, Flyweight2025-10-24: #33, Flyweight2025-10-31: #33, Flyweight2025-11-07: #33, Flyweight2025-11-14: #33, Flyweight2025-11-21: #33, Flyweight2025-12-05: #33, Flyweight2025-12-12: #32, Flyweight2026-01-23: #30, Flyweight2026-01-30: #30, Flyweight2026-02-06: #30, Flyweight2026-02-20: #30, Flyweight2026-02-27: #31, Flyweight2026-03-06: #33, Flyweight2026-03-13: #34, Flyweight2026-03-20: #35, Flyweight2026-03-27: #35, Flyweight2026-04-03: #35, Flyweight2026-04-10: #35, Flyweight2026-04-17: #36, Flyweight2026-04-24: #37, Flyweight2026-05-01: #38, Flyweight2026-05-08: #38, Flyweight2026-05-15: #37, Flyweight2026-05-29: #36, Flyweight2026-06-05: #25, Flyweight2026-06-13: #26, Flyweight2026-06-19: #26, Flyweight2026-06-26: #27, Flyweight2026-07-10: #26, Flyweight2026-07-17: #25, Flyweight2026-07-24: #24, Flyweight2026-07-31: #24, Flyweight2026-08-07: #24, Flyweight2026-08-14: #24, Flyweight2026-08-21: #24, Flyweight2026-08-28: #24, Flyweight2026-09-04: #19, Flyweight2026-09-11: #19, Flyweight2026-09-18: #17, Flyweight2026-09-25: #17, Flyweight2026-09-26: #17, Flyweight2026-10-03: #17, Flyweight2026-10-10: #17, Flyweight2026-10-17: #17, Flyweight2026-10-24: #17, Flyweight2026-10-31: #16, Flyweight#16

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 31 of 132 snapshots (gaps in the line).

Predictive rating by bout

1,5001,5501,6001,65020252026Jun 2024Oct 20262024-06-29: 1,505 (W vs Carlos Hernandez)2025-03-08: 1,512 (L vs Joshua Van)2026-05-30: 1,593 (W vs Luis Gurule)2026-08-29: 1,641 (W vs Kevin Borjas)1,641

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 59 points ahead of the rating: fighters this age typically run 51 points ahead of their rating, and his own recent results track that.

ComponentPointsMeaning
Age component+51what fighters aged 24.4 typically run relative to their rating (population curve, all UFC bouts since 2011)
Own recent results+8his recency-weighted mean and trend over 4 bouts, shrunk toward zero; trend +2 points a year
Combined+59the 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+1.021222324252024-06-29 (age 22.0): W vs Carlos Hernandez, residual -0.002025-03-08 (age 22.7): L vs Joshua Van, residual -0.212026-05-30 (age 23.9): W vs Luis Gurule, residual +0.432026-08-29 (age 24.2): W vs Kevin Borjas, residual +0.32+0.09

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.