Boxers / Jinya Yamaguchi / Boxerbook rating

Jinya Yamaguchi: Boxerbook rating

Jinya Yamaguchi has a Boxerbook rating of 1480 ± 200 from 9 counted bouts, as of Oct 20, 2026. Not in a division list yet: uncertainty ± 200 is above ± 200.

Rating1480 ± 200
PlaceFlyweight, not listed
Counted bouts9
Unknown opponents7 of 9
Schedule, career1147
Schedule, 36 months1170
Form, last 52.2 of 3.5
Data confidence100%
Statusactive · last bout Apr 14, 2026

Rating over time

high 1695 · low 1480Jun 2022Oct 2026

μ at the end of each month with a bout, and of every month while active. Red dot: latest.

Bouts behind the rating

Every counted bout, newest first: the change in μ it caused (green up, red down), its weight and the rating after it. Unknown opponents: 7 of 9 bouts.

L
Kyotaro Yoshida
Vacant OPBF title, Japanese super flyweight title
Apr 14, 2026 · SD 10 · weight ×1.10 · opponent 1313
−192
→ 1480
W
Kantaro Shigeri (no page: counted as 1100)
Japanese super flyweight title
Oct 14, 2025 · SD 10 · weight ×1.10
+20
→ 1672
W
Kyotaro Yoshida
Vacant Japanese super flyweight title
Apr 22, 2025 · UD 10 · weight ×1.10 · opponent 1309
+49
→ 1651
D
Kantaro Shigeri (no page: counted as 1100)
Oct 31, 2024 · SD 8 · weight ×1.00
−93
→ 1602
W
Ryukyu Nagamine (no page: counted as 1100)
Apr 9, 2024 · UD 8 · weight ×1.00
+24
→ 1695
W
Ricardo Sueno (no page: counted as 1100)
Dec 12, 2023 · UD 8 · weight ×1.00
+29
→ 1671
W
Ryutaro Nakagaki (no page: counted as 1100)
Vacant Japanese youth super flyweight title
Mar 14, 2023 · MD 8 · weight ×1.05
+38
→ 1642
W
Argel Samson (no page: counted as 1100)
Oct 11, 2022 · TKO 4/6 · weight ×0.90
+43
→ 1604
W
Shunpei Kubo (no page: counted as 1100)
Jun 22, 2022 · TKO 5/6 · weight ×0.90
+61
→ 1561

Publishers and Boxerbook

Consensus: not in the publishers’ top 15 in Flyweight (a list without them counts as 16).

WBC
not in top 15
WBA
not in top 15
IBF
not in top 15
WBO
not in top 15
Ring
not in top 15
TBRB
not in top 15
Boxerbook
not listed

How the Boxerbook rating works · Jinya Yamaguchi: record and titles